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today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | so to create an electrical field , we have to have a cathode and an anode . the cathode is on this side . remember from general chemistry that at the cathode , reduction takes place , so you 'll have a negative charge . | the cathode is positive in a galvanic cell ... or is this instance different ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . | however , is it possible that the fragments might carry different charges and thus the forces applied might vary , and then that will affect the kinetics ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | although this can be used for small pieces of dna , it can also be used for proteins . you might be wondering , what does sds-page even stand for . the sds part is sodium dodecyl sulfate . | what is the difference between sds page under reducing and nonreducing conditions ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | you 'll see that whatever sized fragments were in your original samples have effectively split up by their size . and note that in pink , you 'll always want to load something known as a dna ladder . a dna ladder is like a standard . this is something that you buy from a company , and they tell you exactly what sizes t... | and what does the ladder go up by ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | so how can we remember the difference between these two types of gels ? remember that sds-page is for small dna or protein cells . s for small , and s for sds . | by any chance , do you know the difference between native page and sds-page for protein electrophoresis ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | although this can be used for small pieces of dna , it can also be used for proteins . you might be wondering , what does sds-page even stand for . the sds part is sodium dodecyl sulfate . | what is the difference between sds page under reducing and non reducing conditions ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | s for small , and s for sds . and agarose is for bigger fragments of dna . so today we 've talked about how you would setup a gel electrophoresis , why it works , and how you would want to pick the substance but your gel 's made of . | bacterial dna appear as faint bands , what can i do for this ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . | what is purpose by using dna as the gel electrophoresis ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | so imagine that being a much finer weaving with smaller pores . although this can be used for small pieces of dna , it can also be used for proteins . you might be wondering , what does sds-page even stand for . | can polyacrylamide gels be used for the analysis of plasmid dna ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | the sds part is sodium dodecyl sulfate . this is a chemical agent that denatures proteins , disrupting any non-covalent interactions they may have . this makes it so that the charge of the proteins is n't a factor when they 're separating out onto the gel , and they 're only being separated strictly by size . | what is the chemical formula for barium chloride enneahydrate ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | the gel is pretty big . there 's big holes here , so that you 'll be able to separate out the big pieces of dna that come through . however , if you 're trying to separate out little pieces , it wo n't be that obvious , because they 'll all just race through these giant holes . so remember that this is for big dna frag... | if i separate the nucleotides : g , t , a , c of a gene , how to read the sequences ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . | is gel electrophoresis and simple electrophoresis same ? |
today , we 'll be talking about gel electrophoresis . what is gel electrophoresis , you might ask . well , it 's a lab technique usually used in the biochemistry lab for separating out dna or proteins based on their size . and let 's talk about how it works . so first , you need to have the gel . this can be made out o... | although this can be used for small pieces of dna , it can also be used for proteins . you might be wondering , what does sds-page even stand for . the sds part is sodium dodecyl sulfate . | what 's the difference between native page , sds-page under reducing conditions & under non-reducing conditions ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | it is linking `` lonely '' to `` bear . '' it is a linking verb . by the same token , we could say , for an action , `` the bear smells a person . '' | please can you explain what a verb is explicitly ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call `` linking verbs . '' or , if you want to call it something fancier , we call that `` state of being verbs . '' | so forms of the word `` to be '' are always linking verbs but other words that link ideas together can also be linking verbs under some circumstances ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | a person . but we could also say , `` the bear smells like cinnamon . '' which , i grant you , is pretty unlikely . | what type of grammar is the word 'like ' in the sentence : the bear smells like cinnamon ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | it is linking `` lonely '' to `` bear . '' it is a linking verb . by the same token , we could say , for an action , `` the bear smells a person . '' | is a state verb the same as a state of being verb ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | a linking verb shows what something is , an action verb shows what something does . so the bear is hungry , the bear looked lonely , the bear smells like cinnamon . these all reflect something about what the bear is . | in the sentence `` the bear is hungry '' why is n't `` hungry '' a noun ( an idea ) ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | a person . but we could also say , `` the bear smells like cinnamon . '' which , i grant you , is pretty unlikely . | i am super confuse about past participle and also with 'been ' and 'being ' could some1 show me what it is or recommend a video on ka ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | what is a bear-like thing to do ? the bear eats a fish . that 's an action . | could `` the bear is eating fish '' be both a linking and action verb ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | this looking is not something the bear is doing , it is how the bear appears to a viewer . so , `` looked '' is connecting `` lonely '' to `` bear . '' it is linking `` lonely '' to `` bear . '' | is `` a bear looked lonely '' belonged to past tense ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | now in this case , this is describing how the bear looks . what the bear looks like . this looking is not something the bear is doing , it is how the bear appears to a viewer . | if the condition is under the present tense , the sentence should be changed to `` a bear looks lonely , '' right ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | so , i am , he is we are , be nice , they were being , they have been , he was , we were . now we use a linking verb when we want to connect one idea to another . so what i 'm gon na do is i 'm gon na divide the screen in half between the action side and the state of being side , just to show you what i mean . | does a linking verb connect 2 nouns ( ideas ) or it can connect a noun to an adjective ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | which , i grant you , is pretty unlikely . do n't go smelling bears . but what `` smells '' is doing here is connecting the idea of cinnamon , to the bear . | a follow up question : why is n't `` feels '' a noun ( an idea ) ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | hello , grammarians . today , we 're talking about verbs and bears . | what is transitive and intransitive vebs ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call `` linking verbs . '' or , if you want to call it something fancier , we call that `` state of being verbs . '' | how many different linking verbs are there ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | but what `` smells '' is doing here is connecting the idea of cinnamon , to the bear . the bear is n't smelling the cinnamon , the bear smells like cinnamon . and that 's the difference between a linking very and an action verb . | is n't the bear is sitting a state of being or an action ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | now in this case , this is describing how the bear looks . what the bear looks like . this looking is not something the bear is doing , it is how the bear appears to a viewer . | so like `` am '' is different from `` is '' ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call `` linking verbs . '' or , if you want to call it something fancier , we call that `` state of being verbs . '' | how are the verbs different ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | a linking verb shows what something is , an action verb shows what something does . so the bear is hungry , the bear looked lonely , the bear smells like cinnamon . these all reflect something about what the bear is . | so can i say the bear were hungry ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | hello , grammarians . today , we 're talking about verbs and bears . | why do cows wear bells ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | some verbs can be used both ways . they can be used both as actions , and as linking verbs . i 'll show you an example of that . | and the actions and the state of being verbs are different ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | they can be used both as actions , and as linking verbs . i 'll show you an example of that . you could say , `` the bear looked at me . '' | for example , one that describes what a `` predicate '' is ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | what is a bear-like thing to do ? the bear eats a fish . that 's an action . | do bears actually eat fish ? |
hello , grammarians . today , we 're talking about verbs and bears . we had previously established at least one thing about the verb , and that was that it can show actions . but today i 'd like to introduce the idea that the verb can link ideas to one another . in fact , we have this whole class of verbs that we call... | hello , grammarians . today , we 're talking about verbs and bears . | which is right , '' i am he '' or `` i am him '' ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | how is it that sin2c=2sinccosc ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | what do we get ? we get a b there . we get a b there . and of course you can just arbitrarily multiply an expression by b that 'll change its value so what we could do is multiply the expression by b which we just did we distributed a b across here but they 'll also divide by b where which - so i 'll divide by b . that... | why not numerator sin b ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | so that was a pretty that's.. we 're doing pretty well so far so let 's see what we can do it the next part when the next part of problem . i 'm trying to save some screen real estate right over here okay so they want us to figure out the value of the expression a over c sine of two c - capital c , plus c over a sine o... | could n't sal just have taken the three angles as x , ( x-c ) and ( x+c ) ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | what is meant by cryptography ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | so that was a pretty that's.. we 're doing pretty well so far so let 's see what we can do it the next part when the next part of problem . i 'm trying to save some screen real estate right over here okay so they want us to figure out the value of the expression a over c sine of two c - capital c , plus c over a sine o... | to apply trignometry , should n't a or c be 90* ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | in an arithmetic progression can the difference between the numbers be 0 ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | so we are left with the square root of three that 's a pretty neat problem . and just in case you are curious where it came from , the two thousand and ten iit , iit are these - hard to get into uh ... engineering and science universities in india and gives you the example like you know hundreds of thousands of kids an... | are we supposed to know the law of sines and/or cosines off the top of our head ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | so all they 're saying is is to go from angle a to angle b - however much that is , is this the same amount to go from angle b to angle c. so let 's see what that tells us what that tells us about or maybe tells us , maybe does n't tell us anything about those angles so if we could say we could say we have angle a and ... | and why did we consider a constant n ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | that 's equivalent of multiplying the denominator the denominator there , not b squared that 's equivalent of multiplying the denominator by b that 's the same thing as dividing by b we multiplied by b , divided by b where that 's the same thing as just turning this to b squared now what does this give us well we have ... | how to find equation of circle if diameters are known ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | so we are left with the square root of three that 's a pretty neat problem . and just in case you are curious where it came from , the two thousand and ten iit , iit are these - hard to get into uh ... engineering and science universities in india and gives you the example like you know hundreds of thousands of kids an... | can someone tell me how to find trignometric ratios of values like sin37 or cos37 without using calculator.. ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | b is equal to a plus n and we just figured out that a plus n has to be equal to sixty degrees so using this first piece of information we are able to come up with something pretty tangible b must be equal to sixty degrees and you could try it out with a bunch of numbers that 's an arithmetic progression and once again ... | as it is related to trignometry , it should have a 90degrees angle , so we have found the 60 degrees , thus by using sum of angles of a triangle , we see that the angles are 30,60,90.. is this possible.. ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | what do we get ? we get a b there . we get a b there . and of course you can just arbitrarily multiply an expression by b that 'll change its value so what we could do is multiply the expression by b which we just did we distributed a b across here but they 'll also divide by b where which - so i 'll divide by b . that... | if we muliply ( sinb/b ) and ( b ) the dinominator b will be cancelled , right ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | and of course you can just arbitrarily multiply an expression by b that 'll change its value so what we could do is multiply the expression by b which we just did we distributed a b across here but they 'll also divide by b where which - so i 'll divide by b . that 's equivalent of multiplying the denominator the denom... | what is that thing in trigonometric equation sin and tan ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | so if you add two ab cosine of c on both sides , you get two ab cosine of capital c plus c squared is equal to a squared plus b squared or if you subtract c squared from both sides you get two ab cosine of capital c is equal to a squared plus b squared minus c squared and this is interesting and we can , you know - swi... | of sides in the polygons ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | these are all arithmetic progressions . so all they 're saying is is to go from angle a to angle b - however much that is , is this the same amount to go from angle b to angle c. so let 's see what that tells us what that tells us about or maybe tells us , maybe does n't tell us anything about those angles so if we cou... | in the video , when sal said `` is to go from angle a to angle b- however much that is , is the same amount to go from angle b to angle c '' , is it the non-mathematical way of saying `` the difference between a and b is the same as the difference between b and c '' ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | so all they 're saying is is to go from angle a to angle b - however much that is , is this the same amount to go from angle b to angle c. so let 's see what that tells us what that tells us about or maybe tells us , maybe does n't tell us anything about those angles so if we could say we could say we have angle a and ... | . since we are using trig , ca n't we assume that either a or c is 90 ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | b is equal to a plus n and we just figured out that a plus n has to be equal to sixty degrees so using this first piece of information we are able to come up with something pretty tangible b must be equal to sixty degrees and you could try it out with a bunch of numbers that 's an arithmetic progression and once again ... | can the triangle abc be a 30 60 90 triangle , since 30 +30 = 60 and 60 + 30 = 90 ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | we have - we started introducing b into the equation and that 's the expression that we actually have information about so this to be rewritten as sine of b over b so this is the same thing as sine of capital b over lower case b and this is the same thing sine of capital b over lower case b and they are both being mult... | how can we replace 2ab cosc = a^2 + b^2 - c^2 with 2bc cosa = c^2 + b^2 - a^2 ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | that 's equivalent of multiplying the denominator the denominator there , not b squared that 's equivalent of multiplying the denominator by b that 's the same thing as dividing by b we multiplied by b , divided by b where that 's the same thing as just turning this to b squared now what does this give us well we have ... | what 's up with the equation sal is writing ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | these are all arithmetic progressions . so all they 're saying is is to go from angle a to angle b - however much that is , is this the same amount to go from angle b to angle c. so let 's see what that tells us what that tells us about or maybe tells us , maybe does n't tell us anything about those angles so if we cou... | at about how does sal know to add a constant to angle a ( and then angle b ) instead of multiply ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | do you only add constants in arithmetic sequences ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | i can swap the letters times the cosine of a here i 'm swaping the as and cs , is equal to c squared plus b squared minus a squared there 's nothing unique about sides c i can do this with all of the sides so here it 's a big c here you have an a and a b out front and then you have the a square plus b squared minus the... | if so , what do you call a sequence where every term is multiplied by a constant ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | we have - we started introducing b into the equation and that 's the expression that we actually have information about so this to be rewritten as sine of b over b so this is the same thing as sine of capital b over lower case b and this is the same thing sine of capital b over lower case b and they are both being mult... | how was sal able to swap the letters `` a '' and `` a '' with `` c '' and `` c '' and have the equation still equal the original ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | these are all arithmetic progressions . so all they 're saying is is to go from angle a to angle b - however much that is , is this the same amount to go from angle b to angle c. so let 's see what that tells us what that tells us about or maybe tells us , maybe does n't tell us anything about those angles so if we cou... | how to find the solution if the angle were in a harmonic progression ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | these are all arithmetic progressions . so all they 're saying is is to go from angle a to angle b - however much that is , is this the same amount to go from angle b to angle c. so let 's see what that tells us what that tells us about or maybe tells us , maybe does n't tell us anything about those angles so if we cou... | sir why we tell tan as tan only why not any other symbol ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | so we are left with the square root of three that 's a pretty neat problem . and just in case you are curious where it came from , the two thousand and ten iit , iit are these - hard to get into uh ... engineering and science universities in india and gives you the example like you know hundreds of thousands of kids an... | what does iit jee stand for ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | b is equal to a plus n and we just figured out that a plus n has to be equal to sixty degrees so using this first piece of information we are able to come up with something pretty tangible b must be equal to sixty degrees and you could try it out with a bunch of numbers that 's an arithmetic progression and once again ... | how there is 60 in 2 ? |
if the angles a , b , and c of a triangle are in an arithmetic progression and if a , b and c - lower case a , b and c denote the length of the sides opposite to the capital , the angles a - capital a , capital b and capital c respectively then what is the value of this expression right over here so let 's if we can wo... | what do we get ? we get a b there . we get a b there . | if we apply projection rule i.e acosc+ccosa=b then we can get it easily , right ? |
- andrey , andrey ? andrey starts working on his science project at 4 o'clock pm , and he finishes 50 minutes later . which number line below has a red dot marking when andrey finishes working on his science project ? so they tell us that he starts his science project at 4 o'clock pm . this first choice over here , put... | it says right over there she started reading at 8:10 pm . 8:10 pm . what time did anna finish reading ? | so if an old arcade game is scheduled to be unplugged at 9 am tomorrow , and it is pm , how long ( in hours and minutes ) will it be until the game is unplugged ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | it 's usually drawn as a diamond shape , and this is a voltage source , but it 's a special kind of voltage source . it 's called a voltage-dependent voltage source . and it 's the same as a regular ideal voltage source except for one thing , it says that the v , in this case v out , equals gain times v plus minus v mi... | and what does a -negative voltage even mean ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | so that gives me , v not plus a v not , times r2 over r1 plus r2 and that equals a times v plus , and actually i can change that now v plus is what ? v plus is v in . okay let 's keep going i can factor out the v not . | how can you say v+ is vin ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | so that gives me , v not plus a v not , times r2 over r1 plus r2 and that equals a times v plus , and actually i can change that now v plus is what ? v plus is v in . okay let 's keep going i can factor out the v not . | why cant the inverting input ( v- ) simply be connected to v_out ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | so let 's see if we can do that . let 's give our resistors some names . let 's call this r1 , and r2 , our favorite names always , and now everything is labeled . | why do we need tgose extra resistors ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | this is called v not equals v in , times what ? times r1 plus r2 , divided by r2 . so our amplifier , our feedback circuit came down to v out is v in multiplied by the ratio of the resistors that we added to the circuit . | why ca n't the voltage divider equation be vo = v in* ( r2 ) /r1+r2 ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | this is called v not equals v in , times what ? times r1 plus r2 , divided by r2 . so our amplifier , our feedback circuit came down to v out is v in multiplied by the ratio of the resistors that we added to the circuit . | why does r2 go on the numerator and not r1 ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | alright so we 're getting close , and our original goal , we want to find v out in terms of v in . so i 'm going to take this whole expression here and divide it over to the other side , so then i have just v not on this side , and v in on the other side . make some more room . | if the + side of a power supply is hooked to a circuit and the - side is simply grounded , how can we expect it to work ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | so this expression came out with a positive sign , right ? all the r 's are positive values , so this is referred to as a non-inverting op-amp circuit amplifier . so just to do a quick example , if r1 and r2 are the same , then we end up with an expression that looks like this v out equals r1 plus r2 , r plus r over r ... | without those extra resistors will the gain of the non-inverting op amp be 1 ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | it 's usually drawn as a diamond shape , and this is a voltage source , but it 's a special kind of voltage source . it 's called a voltage-dependent voltage source . and it 's the same as a regular ideal voltage source except for one thing , it says that the v , in this case v out , equals gain times v plus minus v mi... | so the resisters decide the 'gain ' in the voltage ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | we had a resistor , we had a resistor to the ground , and this is v out . so this is the configuration of a non-inverting amplifier built with an op-amp , the two resistors in this voltage divider string connected to the negative input . so that 's what non-inverting op-amp circuit looks like , and it 's going to be on... | is the non-inverting amplifier always designed to have two resistors stacked on one another while connected to vout ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | and what do we know about this ? we know that v out equals some gain , i 'll write the gain right there . a big , big number times v minus , sorry v plus minus v minus , and let 's label that . | is a is a symbol for gain ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | it 's usually drawn as a diamond shape , and this is a voltage source , but it 's a special kind of voltage source . it 's called a voltage-dependent voltage source . and it 's the same as a regular ideal voltage source except for one thing , it says that the v , in this case v out , equals gain times v plus minus v mi... | why is the circle used to denote a voltage source ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | so that gives me , v not plus a v not , times r2 over r1 plus r2 and that equals a times v plus , and actually i can change that now v plus is what ? v plus is v in . okay let 's keep going i can factor out the v not . | here v- is ground and one end of the resistance is ground what does it mean ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | it 's usually drawn as a diamond shape , and this is a voltage source , but it 's a special kind of voltage source . it 's called a voltage-dependent voltage source . and it 's the same as a regular ideal voltage source except for one thing , it says that the v , in this case v out , equals gain times v plus minus v mi... | does a ground voltage means a earthing current ? |
okay , now we 're going to work on our first op-amp circuit . here 's what the circuit 's going to look like . watch where it puts the plus sign is on the top on this one . and we 're going to have a voltage source over here . this will be plus or minus v in , that 's our input signal . and over on the output , we 'll... | let 's keep going , let 's keep working on this . v not equals a times v plus minus a v not , r2 over r1 plus r2 . alright , so now i 'm going to gather all the v not terms over on the left hand side . | also at 5.45 how does the expression for v- involve r2 rather than r1 in the numerator ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | however , i think that the term common cold does n't really capture the seriousness of this disorder . because depression is n't just feeling down once in awhile . and it 's not feeling sadness or grief at appropriate times , which is just a normal part of life . | is it possible a person with clinical depression does n't want to be helped ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | so is it something that i did ? or is it something that happened because of something that is completely out of my control ? did i get a bad grade on a test because i did n't study ? | is it completely ruled out that depression is caused by some kind of pathogen , like a virus or something ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | and i 'll abbreviate that here by writing nt for neurotransmitter . research has suggested that individuals with depression might have fewer receptors for serotonin and norepinephrine . and i think that all of this research is amazing . | ..i wan na ask if the depression of a genetic cause like fewer receptors for serotonin why the symptoms of depression appear suddenly however , this patient has this number of receptors throughout life ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | and i 've been writing in this blue color to kind of signify depression , but i 'm kind of getting bored with it now , so let me switch it up . so there are a number of factors that may be involved in depression and i 'm going to split them up into three categories : biological factors , psychological factors and socio... | 7 would it not be more accurate if you call it `` biochemical factors '' instead of `` biological factors '' ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | it is n't always clear . environmental and sociocultural factors can also have a strong influence on depression . having a friend or partner or roommate with depression can actually increase the likelihood that individuals around them will also develop depression . and although we do n't know exactly why that is , some... | which age group mostly suffers from depression ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | and on some level , this is kind of normal . it is perfectly normal for close friends to take on some of the negative feelings of the other , like being sad when they lose someone who is close to them or being angry if they were dumped by their partner . this is just natural empathy . | can someone be depressed but not be suicidal ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | however , i think that the term common cold does n't really capture the seriousness of this disorder . because depression is n't just feeling down once in awhile . and it 's not feeling sadness or grief at appropriate times , which is just a normal part of life . | or is depression always accompanied with feeling suicidal ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | individuals with depression also tend to show fluctuations in weight . so either a lot of weight gain or a lot of weight loss . and they might also have trouble sleeping or they might sleep too much . | what would constitute as a lot of weight loss or gain ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | but for individuals in some eastern cultures , especially cultures where it might be seen as inappropriate to delve into or talk about feelings and emotions , people in these cultures tend to think about depression and experience depression in terms of these bodily symptoms , and so it 's really important that these ar... | why mental health care is not included in the curriculum of developing country education system like pakistan and india ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | and this could help to explain why individuals with depression might not find enjoyment in the actions that they once found pleasurable . depression has also been associated with certain neurotransmitters and neurotransmitter regulation . and i 'll abbreviate that here by writing nt for neurotransmitter . | is it possible that certain personality types are prone to depression ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | it is n't always clear . environmental and sociocultural factors can also have a strong influence on depression . having a friend or partner or roommate with depression can actually increase the likelihood that individuals around them will also develop depression . and although we do n't know exactly why that is , some... | so is depression the only study of psychology ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | - [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . | what is an ecological variable ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | - [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . | depression is a chemical imbalance of the brain , however , if something major happen , how does that chemical imbalance occur ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | - [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . | is being a psycologist considered a doctor ? |
- [ voicover ] major depressive disorder , which is sometimes just referred to as depression , is characterized by prolonged helplessness and discouragement about the future . individuals with this disorder have low self-esteem and very powerful feelings of worthlessness . they also lack the energy to do the things tha... | and that 's a behavioral theory or way of thinking about depression , but there are cognitive theories about it as well . and these theories tend to focus on thoughts or beliefs that , with repetition , could trigger depression . and while it 's true that everyone has negative or self-destructive thoughts every once in... | can depression trigger a person to perform violante events ? |
what we 're going to talk about in this video are the origins of the russian people . and in particular , we 're going to talk about the eastern slavs who not just modern russians , but also ukrainians and belorussians view as their ancestors . so let 's think about the world in the ninth century . the early ninth cen... | and then you have the eastern slavs in what will eventually be russia , belarus , and ukraine . now to be clear , they were n't unified groups . there were many many many , for example , eastern slavic tribes . | how closely related are these slavic groups ? |
what we 're going to talk about in this video are the origins of the russian people . and in particular , we 're going to talk about the eastern slavs who not just modern russians , but also ukrainians and belorussians view as their ancestors . so let 's think about the world in the ninth century . the early ninth cen... | and it is also the viking age . so we have here in this magenta color , this would be modern day sweden , but it was also the home of the varangians , or whom we later would refer to as the vikings , and we know them to be great seafarers . in western europe , they 're viewed as raiders of towns along the coast . | would a russian have extremely similar genes as someone from croatia or the czech republic ? |
what we 're going to talk about in this video are the origins of the russian people . and in particular , we 're going to talk about the eastern slavs who not just modern russians , but also ukrainians and belorussians view as their ancestors . so let 's think about the world in the ninth century . the early ninth cen... | you have the southern slavs in what would eventually be referred to as the balkans . and then you have the eastern slavs in what will eventually be russia , belarus , and ukraine . now to be clear , they were n't unified groups . | were the `` rus '' eastern orthodox christians since they conquered the eastern slavs ? |
so here i want to talk about the gradient and the context of a contour map . so let 's say we have a multivariable function . a two-variable function f of x , y . and this one is just gon na equal x times y . so we can visualize this with a contour map just on the xy plane . so what i 'm gon na do is i 'm gon na go ov... | so all of these lines , they 're representing constant values for the function . and now i want to take a look at the gradient field . and the gradient , if you 'll remember , is just a vector full of the partial derivatives of f. and let 's just actually write it out . | given a vector field , is it always the gradient field of a function ? |
so here i want to talk about the gradient and the context of a contour map . so let 's say we have a multivariable function . a two-variable function f of x , y . and this one is just gon na equal x times y . so we can visualize this with a contour map just on the xy plane . so what i 'm gon na do is i 'm gon na go ov... | but the more you zoom in , the more it looks like a straight line . and when you want to interpret the gradient vector . if you remember , in the video about how to interpret the gradient in the context of a graph , i said it points in the direction of steepest descent . | does the orthogonality propierty of the gradient vector mantains as we go into higher dimensions ? |
so here i want to talk about the gradient and the context of a contour map . so let 's say we have a multivariable function . a two-variable function f of x , y . and this one is just gon na equal x times y . so we can visualize this with a contour map just on the xy plane . so what i 'm gon na do is i 'm gon na go ov... | the color represents length . so red here is super-long . blue is gon na be kind of short . | grant said red vectors are super long but they should be super small right ? |
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