Quickfx-9860GII

Reference Guide

Selecting the RUN Q icon will allow you toperform general computations and arithmetic.
The function keys allow you to access thetab (soft key) menus that will come up at the bottomof the screen. When an u appears above theu
key, selecting u will offer more on-screen choices.
The p key displays every mode the calculator has.
To select a mode, you may $B to the desired icon
and press l or press the number or letter in thelower right hand corner of the icon.
The d key operates like the back arrow on a webbrowser; it will take you back one screen each time
you select it. The d key will not take you to theicon menu.
The x key is a toggle key that will change answers
or entered numbers back and forth from decimal tofraction/root form.
The O key will power the unit on. To turn the unit
off, press the yellow L key, then O key.
Thez key is used to obtain a fraction bar. To obtaina mixed number, press z after inputting the wholenumber.
The l key executes operations. When data isentered, the l button must be pressed to store
the data.

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Note thisThe following explains the meaning of each icon on the fx-9860GII icon menu
ICONMenu
NameDescription

QRUN

This icon menu is used for general computations, including absolute value, logs of any
base, summation, derivatives, and integrals.

This icon menu is used to perform single-variable (standard deviation) and paired
STATISTICS variable (regression) statistical calculations, to perform tests, to analyze data and todraw statistical graphs.

eeACTIVITY

eActivity allows for the input of text, math expressions, and other data in a notebooklike interface. Use this mode when you want to store text, formulas, or built-in
application data in a file

This icon menu is used for creating spreadsheets.
r SPREADSHEET
icon menu is used to quickly draw, store and calculate information of functions.
Y GRAPH ThisCan graph polar, parametric, x=, and inequality graphs on the same screen.
This icon menu is used to draw multiple versions of a graph by changing certain values
U DYNAMICin the function.
GRAPH
icon menu is used to store functions, to generate a numeric table of differenti TABLE Thissolutions as the values assigned to variables in a function change, and to draw graphs.

opThis icon menu is used to store recursion formulas, to generate a numeric table ofRECURSION different solutions as the values assigned to the variables in a function change, and todraw graphs
CONICSThis icon menu is used to graph parabolas, circles, ellipses, and hyperbolas. You can
input a rectangular or polar coordinate function or a parametric function for graphing.

icon menu is used to solve linear equations with two through six unknowns, andA EQUATION This
high-order equations from 2 to 6 degree.
S PROGRAM This icon menu is used to store programs in the program area and to run programs.
VALUE This icon menu is used to preform financial calculations and to create cash flow andd TIME
OF MONEY other types of graphs.
ndDATAANALYZER
LINK

thThis icon menu is used to control the optionally available EA-200 Data Analyzer.
For information about this icon menu, download the E-CON2 manual fromhttp://edu.casio.com.

icon menu is used to transfer memory contents or back-up data to another unitF LINK Thisor PC.
g MEMORY This icon menu is used to manage data stored in memory.
icon menu is used to initialize memory, adjust contrast, reset memory, and toh SYSTEM This
manage other system settings.

GEOMETRY This mode allows you to draw, analyze and animate geometric objects.
2Getting Started with the fx-9860GII

RUN
This section is an overview of the RUN Icon. To select an icon from the icon menu system, use
the !$BN to highlight the desired icon, then press l or press the number/letter in thelower right corner of the icon. For the RUN menu, press 1 to display the initial screen.
Note: All operations in this handout will utilize the “Math” input mode, which allows natural
input and display of certain functions, just as they appear in a textbook. To make sure yourcalculator is in “Math” mode, press Lpqd from the RUN menu.

1. When performing general computations, you can press z to enter fractions and mixed
numbers. To solve the problem,
input the following:• z5N8$+Lz2$1N3l

2. To change the answer,

71, to a mixed number, press LxX.
243. To change the answer to a decimal approximation, press x. x is a toggle key that willswitch entered data or answers from standard form to its decimal approximation and back.

Getting Started with the fx-9860GII

3RUN
4. To change the displayed number of decimal places, enter the SET UP menu by pressing
Lp. N to Display, select q (Fix) and enter the desired amount of decimal places
followed by l. For this example, 3 decimal places are used.
Note: Every icon’s SET UP menu is accessed in the same way.
• LpNNNNNNNNNNNq3ldlx

From the RUN menu, many calculations can be entered by selecting i. For example:
hyperbolic, probability/distribution, numeric (including differential and integration), conversion,engineering, complex number and binary, octal, decimal and hexadecimal calculations.
5. To calculate the possible number of different arrangements using 4 items selected from among
10 items, enter the following from the RUN home screen:• iue10w4l

6. To calculate -103 + 2 , enter the following from the RUN home screen:• iewn10^3$+2l

Calculations can be performed with complex numbers and answers can be displayed ina+bi form.

4Getting Started with the fx-9860GII

RUN
7. To calculate (-3 + 2i ) + 15i; enter the following:• iejn3+2qk+15ql

Sigma calculations can also be performed in the RUN menu.
8. To calculate; enter the following:• iruea,s3a,+5$a,$2B6l

Getting Started with the fx-9860GII

5GRAPH
Various icons (Run, Table, Dynamic, Recursion & Conics) will allow you to graph or analyze thegraphs of given information. This section is an overview of the GRAPH Icon and will highlightsome basic features of this mode..
The initial screen allows immediate input of functions set equal to zero. You may begin inputting
data into Y1: pressing l to store; to draw your function(s), select u.

You can change the type of graph (r = polar coordinates, parametric functions, x =, andinequalities) by selecting the corresponding TYPE button and then press $ to begin inputting.

When the TYPE of graph is changed, it only affects the current line and entries below it.
Functions already stored are unchanged.
1. To draw the graph of the function y=2x2 -5x-3 from the Icon Menu system, input the following:• 52fs-5f-3l

To quickly change your window, you can utilize the Replay arrows. Specific changes can bemade to the viewing window by selecting V-Win e.
To analyze features of this graph (roots, maximum and minimums, y-intercepts, intersections,determine coordinates, and integrals) select y (G-Solve).

6Getting Started with the fx-9860GII

GRAPH
2. q (Root):

Note: The left-most root will always display first. To display the next root, simply press $.
3. e (Minimum):Note: As long as the x-value of your vertex is in the viewable domain; you do not need to see
the vertex to calculate the minimum value. However, you can change the viewing windowby selecting e (V-Window) in the graph window.
4. r (y-intercept):

5. q (y-calculation): What is the value of y when x is -5?

6. w (x-calculation): What is the value(s) of x when y is 1?

7. e (integral): Determine the integral value from (0,3) for the function Y1=2x2 - 5x-3.

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TABLE
This section is an overview of the TABLE Icon. To select this icon, you may highlight it and pressl or press 7.
The initial screen allows immediate input of functions that are set equal to 0. To change thetype of expression to be entered, press e (TYPE) and select w (r=) for polar coordinates,e (Param) for parametric functions or r (CONV) to convert a previously entered function
to an inequality.

1. To see a table for the function, highlight Y1: and input the following:• z2N3$f-4lu

2. The default setting for tables is: X starts at 1, ends at 5, and increases by increments of 1.
You change this by pressing d or q (FORM) to return to the initial screen and then selecty (SET).

3. However, you can enter a number anywhere in the x-column of the table and press l to see
the corresponding y-value (including fractions, decimals, even π). You can insert and deleterows in this view by pressing e (ROW). This is a quick way to custom make tables.

8Getting Started with the fx-9860GII

TABLE
4. From the table view screen, you can press y (G-CON) to see a connected plot linear graph oru (G-PLT) to see a plot graph for the function you entered.

5. To see a split screen of your table and graph, press Lp to enter the SET UP menu for theTABLE icon. Scroll down to Dual Screen, select q (T + G), d, then u i.
If you manually entered values to the previous table that you still want displayed, you can re-enter
them here, then press l to see the graph of that table.

To generate a differential number table, press Lp to enter the SET UP menu for the TABLE
icon and N to Derivative, select q (On), d, and then u.
6. For this example, enter YI: 3x2 -2 and Y2: x2 then u to view the differential number table.

Note: Locating the cursor at a differential coefficient displays “dy/dx” in the top line, whichindicates differential.

Getting Started with the fx-9860GII

9STATISTICS
This section is an overview of the STAT Icon; it will highlight just a few of the features for
single-variable data and paired-variable data. To select this icon, you may highlight it andpress l or press2.
The initial screen is the List Editor Screen that allows input of statistical data and performs
numerous statistical calculations. To input a list of single-variable data, highlight the first cellunder List 1 and enter each number followed by l.

1. For this example, input this set of data:

2. From this screen you can display various statistical graphs depending on whether you havesingle or paired-variable data (scatter-plot, line, normal probability, histogram, median box,mean box, normal distribution, broken line, and regression: linear, quadratic, cubic, quartic,logarithmic, exponential, power, sinusoidal and logistic).

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Getting Started with the fx-9860GII

STATISTICS
3. The initial default graph is a scatter-plot. To change the type of graph you would like to use,press q (GRPH), then u (SET), arrow down to Graph Type, for this set of data, we will makea histogram, press u, and then q for histogram.

4. Press d to return to your list of data, select q (GPH1) then l to see your graph.

5. The following screen shots show one-variable calculations that can be obtained bypressing q.

6. To delete this set of data, press d until you return to the initial List Editor screen. Select ufor more options, arrow up until List 1 is highlighted, select r (Del-A), then q.

Getting Started with the fx-9860GII

11STATISTICS
7. For paired variable data, use the following:Enter List 1 first, and then $ to begin entering List 2. The cursor will automatically move to thebeginning of the next list.

8. To see a scatter-plot of these data, you can go through and change GPH 1 back, using
the process above, or select w (GPH 2) from the List Editor screen whose default is also ascatter-plot.

9. From the scatter-plot screen, pressing q will show all the calculations that can be obtained
from this set of data.

10. To calculate a linear regression for these data, select w from the first set of options and thenpress q or w for the preferred form. For this example, we will use y = ax + b.

11. From this screen, select y (COPY) to copy and then paste the regression equation into theinitial Graph screen or select u (DRAW) to show the linear regression.

12Getting Started with the fx-9860GIIEQUATION
This section is an overview of the EQUATION Icon. To select this icon, highlight it and press lor press f.
The initial Equation Editor screen has three modes to choose from, Simultaneous, Polynomial,and Solver; this section will give an overview of each mode.

The Simultaneous mode allows you to solve simultaneous linear equations that contain two tosix unknowns.
1. Solve the following system of equations:Press q to select the Simultaneous mode and press w for three unknowns. The calculator
will display a matrix where the coefficients and constants can be entered in to as long as eachequation is in standard form. To enter this system of equations (already in standard form) input
the following:•4 l 1 l n 2 l n 1 l•1 l 6 l 3 l 1 l•n 5 l 4 l 1 l n 7 l

There are four options at the bottom of the screen, press q (SOLV). The solution to this system is (1,-1,2).
Getting Started with the fx-9860GII

13EQUATIONPress d to return to the previous screen, press q (REPT) to edit this problem or continuesolving simultaneous equations with three unknowns. To edit just one of the numbers in thesystem, arrow to the number to be edited and press r (EDIT) or highlight the number to beedited and just enter the new number, then press l.
Press d until the Equation Editor screen is displayed. The second mode is w Polynomial
and can be used to solve second to sixth degree polynomial equations (in standard form).
2. To solve the equation x3 – 2x2 – x + 2 = 0, input the following:• ww1ln2ln1l2lq

3. To change the equation to x3 + 2x2 + 3x + 2 = 0, select q (REPT) and change the b- value
to 2, the c-value to 3 and press q (SOLV).

4. The default setting is for real numbers; to change the display to a+bi form, press Lp
for the Polynomial SET UP menu, select w (a+bi), d, then q (SOLV).

14Getting Started with the fx-9860GIIEQUATION
Solver is the third function and allows you to determine the value of any variable in a formula orequation. You can input any formula exactly as it appears using a for any variables. In thisexample, we will solve a linear equation and a formula.
5. To find the value of x in the following equation, 2(x -5) = -3x + 2, input the following, startingfrom the Equation Editor Screen:• e2jf-5kL.n3f+2lu

Note: In the last screen, “Lft” and “Rgt” represent the values of the left and right sides of theequation using the value of the solution; this is the calculator’s way of checking the solution.
You can also enter a formula, assign values, and solve for a specific variable using the Solver
function of the Equation Editor.
6. Find the radius (to the nearest hundredth) of a sphere, whose volume is 3705.97 cm3. To enter
the formula
input the following into the calculator:
• qBa2L.z4N3$Lca6^3lNote: S electing q will take you back to the previous screen where you can edit and re-solve
the previous equation or begin a new problem.

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CONICS
This section is an overview of the CONICS Icon. To select this icon, you may highlight it and pressl or press 9.
The initial CONICS screen allows you to choose from various conic functions, including
rectangular, polar or parametric form. You may use the BN to select the equation of thefunction in accordance with the type of graph you want to draw. Once you have chosen the conic
function you would like to graph, enter the coefficients of the function and then press DRAW u.

1. To view the graph of the conic: y = 2x2 -5x -3, select the y = AX2 + BX + C form from the Conics
formula menu.

In the Conics modes, when you press y (G-Solv), although you are still graphing a parabolalike in the graphing section, notice how the vocabulary and options have changed to be conic
specific.

2. For example, you can now examine the line of symmetry for this parabola as the equationof that line will be displayed.

You can continue to analyze different areas of this graph and the line of symmetry will still
be displayed.

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http://edu.casio.com/Worldwide education website for teachers and students

Getting Started with the fx-9860GIICCL3/14