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help-10
105bb8f5bfca4fe2a639fdd509e7c909
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Deleted User
01/13/2022 15:56:15
Top of page in the rectangle
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Deleted User
01/13/2022 15:56:24
@Kings of Latin
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105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:00:16
i've made it half way
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:00:30
using double angle formulas
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:01:03
We use that in uh
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:01:05
What gradr
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:01:15
This isnt actually homework
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:01:28
Its mostly just me being curious about it
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
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Deleted User
01/13/2022 16:01:45
So please dont crack your head if its just bs in the end
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Deleted User
01/13/2022 16:17:21
@Kings of Latin where are you at?
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Kings of Latin
01/13/2022 16:18:44
still stump
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105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:19:23
see if my half way helps u
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:20:14
-(cos^2x - sin^2x) = u know this part
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:20:18
Yes
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:20:28
it's not 2 x
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:20:32
Could you just take a picture of your notes?
1
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:20:37
it's just x
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:20:46
Oh yeah i know
1
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:21:32
You mean this basically -(cos^2(x) - sin^2(x))
1
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:21:44
yes
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:22:13
May i see the papers you worked on? Im mostly interested on how you got there
1
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:22:15
But thank you
1
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:22:53
i can't show u
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:23:20
Itsa fine
1
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:23:28
Thank you anyways though
1
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:23:32
Ill see what i can do
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:24:41
https://cdn.discordapp.c…5464353923_n.png
271732241_344779697648157_5660358605464353923_n.png
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Deleted User
01/13/2022 16:24:51
Damn
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:24:55
Thats uh
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:25:03
50p
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
456,226,577,798,135,800
Deleted User
01/13/2022 16:25:19
Chromebook picture
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help-10
105bb8f5bfca4fe2a639fdd509e7c909
830,084,702,727,700,500
Kings of Latin
01/13/2022 16:25:26
yea
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Deleted User
01/13/2022 16:25:54
I cant read it but thank you again
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help-10
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Deleted User
01/13/2022 16:26:19
.close
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:30:35
What is meant by "Check the validity of the chain rule directly for linear mappings?" It says Let f:R^n -> R^m be a linear mapping so that Df(x) is the matrix of f.
1
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:31:26
I'm thinking of creating an arbitrary function respect to t, such that it outputs n elements so that chain rule can apply
1
0
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:31:34
but I don't understand what it means by check the validity
1
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help-10
a0bd14e489f84911997c547ef83fbde3
321,445,119,171,756,000
Shuri2060
01/13/2022 18:35:41
whats the chain rule again
0
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:36:03
?
1
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help-10
a0bd14e489f84911997c547ef83fbde3
321,445,119,171,756,000
Shuri2060
01/13/2022 18:36:45
The one in your notes
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:37:02
I'm confused what the question is asking for
1
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:37:06
I know what the chain rule is
1
0
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51
help-10
a0bd14e489f84911997c547ef83fbde3
321,445,119,171,756,000
Shuri2060
01/13/2022 18:38:07
yah can u show
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1
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:39:41
https://cdn.discordapp.c…976/IMG_0065.png
IMG_0065.png
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help-10
a0bd14e489f84911997c547ef83fbde3
321,445,119,171,756,000
Shuri2060
01/13/2022 18:47:23
thats not the chain rule right?
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:53:36
i realized this is for high school questions
1
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:53:42
so i moved my question to #multivariable-calculus
1
0
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help-10
a0bd14e489f84911997c547ef83fbde3
196,117,733,790,842,880
Kevin Shin || '24 || ERC
01/13/2022 18:53:49
.close
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:06:56
Which of the following expressions is not equivalent to the other expressions A. -a/b B. -a/-b C. - a/b D. a/-b
1
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help-10
1938be98b335411199abcb52f6066cc0
485,903,210,272,391,200
dldh06
01/13/2022 19:09:12
What did you try?
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help-10
1938be98b335411199abcb52f6066cc0
485,903,210,272,391,200
dldh06
01/13/2022 19:09:45
Did you try simplifying the expressions, if possible?
0
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:10:14
How do you simplify variables?
1
0
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:10:27
I'm only in pre-algebra btw
1
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help-10
1938be98b335411199abcb52f6066cc0
485,903,210,272,391,200
dldh06
01/13/2022 19:10:51
Simplify the signs
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help-10
1938be98b335411199abcb52f6066cc0
485,903,210,272,391,200
dldh06
01/13/2022 19:11:51
Like for multiplication/division, positive times positive is equal to positive, negative times positive equals negative, etc
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:12:16
Yeah
1
0
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:12:44
This isn't really a problem more as it's a regular question
1
0
null
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:12:58
I don't see the need in that, could you explain further?
1
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52
help-10
1938be98b335411199abcb52f6066cc0
485,903,210,272,391,200
dldh06
01/13/2022 19:14:00
You need to do what I stated, because one of those requires that simplification
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cat_
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cat_
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:14:33
B?
1
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help-10
1938be98b335411199abcb52f6066cc0
589,206,850,839,380,000
Moon Child
01/13/2022 19:15:05
I think what he is trying to explain is when you see two negatives in one spot, it's now a positive. If you see a positive number with a negative number, it's a negative. And from there, that's how you'd simplify each of those fractions
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:15:34
Ohhh
1
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:15:40
I see now. Thank you
1
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help-10
1938be98b335411199abcb52f6066cc0
485,903,210,272,391,200
dldh06
01/13/2022 19:16:05
Yeah, what moon said
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help-10
1938be98b335411199abcb52f6066cc0
589,206,850,839,380,000
Moon Child
01/13/2022 19:16:42
You're welcome
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:17:59
So can i close it?
1
0
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:18:10
I understand the process now
1
0
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help-10
1938be98b335411199abcb52f6066cc0
485,903,210,272,391,200
dldh06
01/13/2022 19:18:20
If you're good with everything
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help-10
1938be98b335411199abcb52f6066cc0
699,843,794,933,383,300
cat_
01/13/2022 19:18:25
.close
1
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:23:05
https://gyazo.com/5f48ced42d564dfbac9eed360b9e232e
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:23:47
how did they get 0.4?
1
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:45:41
cos is basically sin but shifted right
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usernamephobic
5835
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53
help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:46:00
sin(x) = cos(x + pi/2) or something
0
1
null
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null
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53
help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:46:12
but this wave doesn't have period 2pi
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1
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:46:29
it has period 1.6 sec
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:48:29
i havent learned this yet
1
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891,099,642,245,300,200
a name
7081
a name
false
53
help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:48:50
oh well
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:49:07
have you not learnt trigonometry or just not learned this identity
0
1
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:49:24
havent learned that identity
1
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:49:39
oh well just remember it then lol
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:49:42
the unit im learning about is just sinsiduail functions, nothing else
1
0
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:49:46
You can easily see it from the graph of sin and cos
0
1
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:50:01
This is sin
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:50:03
https://cdn.discordapp.c…ial-WkW3KdfT.png
material-WkW3KdfT.png
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:50:13
this is cos
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:50:14
https://cdn.discordapp.c…ial-adzCt2Nu.png
material-adzCt2Nu.png
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:50:21
yes
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0
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:50:47
oh wait it's sin x = -cos(x+pi/2)
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:51:34
ok but
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0
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:51:47
i still dont understand how they got -0.4
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0
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:52:53
what's the period of sin x and cos x
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:53:38
1.6
1
0
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:54:21
no like the pure form of sin x and cos x
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:54:31
does sin(0) = sin(1.6)? doubt it
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:55:56
i cant use identities ebcause my teacher dosent want us to use that
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:56:03
wtf
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:56:12
how are you meant to do problems without identities
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help-10
b7cd02655d634258bca4682febb6b72c
493,932,414,905,745,400
usernamephobic
01/13/2022 19:56:15
and plus theres another way since she got the answer without using identities
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:56:18
hm ok
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help-10
b7cd02655d634258bca4682febb6b72c
891,099,642,245,300,200
a name
01/13/2022 19:56:23
i cant really help you
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