This calculator does not contain any main batteries when you purchase it. Be sure to perform
the following procedure to load batteries, reset the calculator, and adjust the contrast before
trying to use the calculator for the first time.
1. Remove the back cover from the calculator by pressing it in the direction indicated by
arrow 1, and then sliding it in the direction indicated by arrow 2.
1
P
2
2. Load the four batteries that come with calculator.
• Make sure that the positive (+) and negative (–) ends of the batteries are facing correctly.
P
MAIN
BACK UP
3. Remove the insulating sheet at the location marked “BACK UP” by pulling in the direction
indicated by the arrow.
P
MAIN
BACK UPBACK UP
4. Replace the back cover onto the calculator and turn the calculator front side up, which
should automatically turn on power and perform the memory reset operation.
P
MAIN
i
5. Press m.
If the Main Menu shown to the right is not on the display,
press the P button on the back of the calculator to perform
memory reset.
6. Use the cursor keys (
or simply press
7. Use d and e to adjust contrast.
d makes figures on the screen lighter, while e makes them darker.
•
• Holding down
8. After adjusting the contrast, press
f , c, d, e ) to select the CONT icon and press w
D
to display the contrast adjustment screen.
s
d or e changes the contrast setting at high speed.
mto return to the Main Menu.
P
P button
ii
KEYS
Alpha Lock
Normally, once you press a and then a key to input an alphabetic character, the keyboard
reverts to its primary functions immediately. If you press ! and then a, the keyboard
locks in alpha input until you press a again.
iii
KEY TABLE
PagePagePagePagePagePage
146
2 31333
25756
59
59
PagePagePagePagePage
151129
3334
5756
5656
5656
57
46
174164136
5555
5555
57
46
24
23
55
55
25
46
46
55
46
iv
49
46
46
46
Quick-Start
Switching Power On And Off
Auto Power Off Function
Using Modes
Basic Calculations
Replay Features
Fraction Calculations
Exponents
Graph Functions
Dual Graph
Box Zoom
Dynamic Graph
Table Function
Quick-Start
o
Welcome to the world of graphing calculators and the CASIO fx-9750G.
Quick-Start is not a complete tutorial, but it takes you through many of the most common
functions, from turning the power on to graphing complex equations. When you’re done, you’ll
have mastered the basic operation of the fx-9750G and will be ready to proceed with the rest
of this manual to learn the entire spectrum of functions available.
Each step of the examples in Quick-Start is shown graphically to help you follow along
quickly and easily. When you need to enter the number 57, for example, we’ve indicated it as
follows:
fh
Press
Whenever necessary, we’ve included samples of what your screen should look like.
If you find that your screen doesn’t match the sample, you can restart from the beginning by
pressing the “All Clear” button
SWITCHING POWER ON AND OFF
o
.
To switch power on, press o.
To switch power off, press
!
OFF
.
AUTO POWER OFF FUNCTION
Note that the unit automatically switches power off if you do not perform any operation for
about six minutes (about 60 minutes when a calculation is stopped by an output command
(^)).
USING MODES
The fx-9750G makes it easy to perform a wide range of calculations by simply selecting
the appropriate mode. Before getting into actual calculations and operation examples, let’s
take a look at how to navigate around the modes.
To select the RUN Mode
1. Press m to display the Main Menu.
vi
Quick-Start
2. Use defc to highlight RUN and then
w
.
press
This is the initial screen of the RUN mode, where you
can perform manual calculations, and run programs.
BASIC CALCULATIONS
With manual calculations, you input formulas from left to right, just as they are written on
paper. With formulas that include mixed arithmetic operators and parentheses, the calculator
automatically applies true algebraic logic to calculate the result.
Example:
1. Press
2. Press
15 × 3 + 61
o to clear the calculator.
bf*d+gbw.
Parentheses Calculations
Example:
1. Press
15 × (3 + 61)
bf*(d
+gb)w
.
Built-In Functions
The fx-9750G includes a number of built-in scientific functions, including trigonometric and
logarithmic functions.
Example:
25 × sin 45˚
Important!
Be sure that you specify Deg (degrees) as the angle unit before you try this
example.
vii
1. Presso.
SET UP
2. Press
3. Presscccc1 (Deg) to specify
!
degrees as the angle unit.
m
to switch the set up display.
Quick-Start
4. Press
5. Press
6. Press
J to clear the menu.
o to clear the unit.
cf*sefw.
REPLAY FEATURES
With the replay feature, simply press d or e to recall the last calculation that was
performed. This recalls the calculation so you can make changes or re-execute it as it is.
Example:
1. Press
2. Press
3. Press
To change the calculation in the last example from (25 × sin 45˚) to (25 × sin 55˚)
d to display the last calculation.
d twice to move the cursor under the 4.
f.
4. Press
w to execute the calculation again.
viii
Quick-Start
FRACTION CALCULATIONS
You can use the $ key to input fractions into calculations. The symbol “ { ” is used to
separate the various parts of a fraction.
Example:
1. Presso.
2. Press
1 15/16 + 37/
9
b$bf$
bg+dh$
jw
Converting a Mixed Fraction to an Improper Fraction
While a mixed fraction is shown on the display, press
improper fraction.
Press
!
Converting a Fraction to Its Decimal Equivalent
While a fraction is shown on the display, press M to convert it to its decimal equivalent.
Press
M again to convert back to a fraction.
.
d/c
again to convert back to a mixed fraction.
$
Indicates 6 7/
144
!
d/c
to convert it to an
$
ix
EXPONENTS
Quick-Start
Example:
1. Presso.
2. Press
3. Press
4. Press
5. Press
1250 × 2.06
bcfa*c.ag.
M and the ^ indicator appears on the display.
f. The ^5 on the display indicates that 5 is
an exponent.
w.
5
x
Quick-Start
GRAPH FUNCTIONS
The graphing capabilities of this calculator makes it possible to draw complex graphs
using either rectangular coordinates (horizontal axis: x ; vertical axis: y) or polar coordinates
(angle:
θ
; distance from origin: r).
Example
1. Press
2. Use
3. Input the formula.
1: To graph Y = X(X + 1)(X – 2)
m.
d, e, f, and c to highlight GRAPH,
and then press
w
.
v(v+b)
(v-c)w
4. Press 6 (DRAW) or w to draw the graph.
123456
Example
1. Press
2: To determine the roots of Y = X(X + 1)(X – 2)
! 5 (G-Solv).
123456
xi
2. Press 1 (ROOT).
Press
e for other roots.
Quick-Start
Example
1. Press
2. Press 6 (g).
3. Press
4. Use
3: Determine the area bounded by the origin and the X = –1
root obtained for Y = X(X + 1)(X – 2)
!5 (G-Solv).
3 (
∫
dx).
e to move the pointer to the location where X = –1,
and then press
pointer to the location where X = 0, and then press
to input the integration range, which becomes shaded
on the display.
w. Next, use e again to move the
123456
123456
w
xii
Quick-Start
DUAL GRAPH
With this function you can split the display between two areas and display two graphs on
the same screen.
Example:
1. Press !Zcc1(Grph) to specify
2. Press
To draw the following two graphs and determine the points of intersection
Y1 = X(X + 1)(X – 2)
Y2 = X + 1.2
“Graph” for the Dual Screen setting.
J, and then input the two functions.
v(v+b)
(v-c)w
v+b.cw
3. Press 6 (DRAW) or w to draw the graphs.
1 23456
123456
BOX ZOOM
Use the Box Zoom function to specify areas of a graph for enlargement.
1. Press
2. Use d, e, f, and c to move the pointer
! 2 (Zoom) 1 (BOX).
to one corner of the area you want to specify and then
w
.
press
xiii
3. Use d, e, f, and c to move the pointer
again. As you do, a box appears on the display. Move
the pointer so the box encloses the area you want to
enlarge.
Quick-Start
4. Press
w, and the enlarged area appears in the in-
active (right side) screen.
DYNAMIC GRAPH
Dynamic Graph lets you see how the shape of a graph is affected as the value assigned to
one of the coefficients of its function changes.
Example:
1. Press m.
2. Use
and then press
To draw graphs as the value of coefficient A in the following
function changes from 1 to 3
Y = AX
2
d, e, f, and c to highlight DYNA,
.
w
3. Input the formula.
aAvxw
123456
xiv
4. Press 4 (VAR) b w to assign an initial value
of 1 to coefficient A.
Quick-Start
1 2 3456
5. Press
6. Press
7. Press
2 (RANG) bwd wbw
to specify the range and increment of change in coefficient A.
J.
6(DYNA) to start Dynamic Graph drawing.
The graphs are drawn 10 times.
↓
↓↑
↓↑
xv
Quick-Start
TABLE FUNCTION
The Table Function makes it possible to generate a table of solutions as different values
are assigned to the variables of a function.
Example:
1. Press m.
2. Use
3. Input the formula.
To create a number table for the following function
Y = X (X+1) (X–2)
d, e, f, and c to highlight TABLE,
and then press
w
.
v(v+b)
(v-c)w
4. Press 6 (TABL) or w to generate the number
table.
123456
After you’ve completed this Quick-Start section, you are well on your way to becoming an
expert user of the CASIO fx-9750G.
To learn all about the many powerful features of the fx-9750G, read on and explore!
xvi
Handling Precautions
• Your calculator is made up of precision components. Never try to take it apart.
• Avoid dropping your calculator and subjecting it to strong impact.
• Do not store the calculator or leave it in areas exposed to high temperatures or humidity, or large
amounts of dust. When exposed to low temperatures, the calculator may require more time to display
results and may even fail to operate. Correct operation will resume once the calculator is brought back
to normal temperature.
• The display will go blank and keys will not operate during calculations. When you are operating the
keyboard, be sure to watch the display to make sure that all your key operations are being performed
correctly.
• Replace the main batteries once every 2 years regardless of how much the calculator is used during
that period. Never leave dead batteries in the battery compartment. They can leak and damage the
unit.
• Keep batteries out of the reach of small children. If swallowed, consult with a physician immediately.
• Avoid using volatile liquids such as thinner or benzine to clean the unit. Wipe it with a soft, dry cloth, or
with a cloth that has been dipped in a solution of water and a neutral detergent and wrung out.
• In no event will the manufacturer and its suppliers be liable to you or any other person for any damages,
expenses, lost profits, lost savings or any other damages arising out of loss of data and/or formulas
arising out of malfunction, repairs, or battery replacement. The user should prepare physical records of
data to protect against such data loss.
• Never dispose of batteries, the liquid crystal panel, or other components by burning them.
• When the “Low battery!” message appears on the display, replace the main power supply batteries as
soon as possible.
• Be sure that the power switch is set to OFF when replacing batteries.
• If the calculator is exposed to a strong electrostatic charge, its memory contents may be damaged or
the keys may stop working. In such a case, perform the All Reset operation to clear the memory and
restore normal key operation.
• If the calculator stops operating correctly for some reason, use a thin, pointed object to press the P
button on the back of the calculator. Note, however, that this clears all the data in calculator memory.
• Note that strong vibration or impact during program execution can cause execution to stop or can
damage the calculator’s memory contents.
• Using the calculator near a television or radio can cause interference with TV or radio reception.
• Before assuming malfunction of the unit, be sure to carefully reread this manual and ensure that the
problem is not due to insufficient battery power, programming or operational errors.
xvii
Be sure to keep physical records of all important data!
The large memory capacity of the unit makes it possible to store large amounts of data. Y ou should note,
however, that low battery power or incorrect replacement of the batteries that power the unit can cause
the data stored in memory to be corrupted or even lost entirely. Stored data can also be affected by
strong electrostatic charge or strong impact.
Since this calculator employs unused memory as a work area when performing its internal calculations,
an error may occur when there is not enough memory available to perform calculations. To avoid such
problems, it is a good idea to leave 1 or 2 kbytes of memory free (unused) at all times.
In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral, incidental, or
consequential damages in connection with or arising out of the purchase or use of these materials.
Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of any kind whatsoever against the
use of these materials by any other party.
• The contents of this manual are subject to change without notice.
• No part of this manual may be reproduced in any form without the express written consent of the
manufacturer.
• The options described in Chapter 20 of this manual may not be available in certain geographic
areas. For full details on availability in your area, contact your nearest CASIO dealer or distributor.
xviii
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Contents
Getting Acquainted — Read This First!........................................ 1
About the Auto Power Off Function ........................................................... 398
Appendix C Error Message T able ........................................................399
Appendix D Input Ranges .................................................................... 401
Appendix E 2-byte Command Table .................................................... 404
Appendix F Specifications ................................................................... 405
Index .......................................................................................................410
Command Index ..................................................................................... 416
Key Index ................................................................................................417
xxix
Getting Acquainted
— Read This First!
The symbols in this manual indicate the
following messages.
: Important notes
: Notes
: Reference pages
P.000
Getting Acquainted — Read This First!
1. Key Markings
Many of the calculator’s keys are used to perform more than one function. The func-
tions marked on the keyboard are color coded to help you find the one you need
quickly and easily.
1logl
210
3Bal
The following describes the color coding used for key markings.
ColorKey Operation
OrangePress ! and then the key to perform the marked
FunctionKey Operation
x
!l
function.
RedPress a and then the key to perform the marked
function.
2
2. Selecting Icons and Entering Modes
This section describes how to select an icon in the Main Menu to enter the mode you want.
uTo select an icon
1. Press m to display the Main Menu.
m
Currently selected icon
2. Use the cursor keys (d, e, f, c) to move the highlighting to the icon you
want.
3. Press w to display the initial screen of the mode whose icon you selected.
• You can also enter a mode without highlighting an icon in the Main Menu by
inputting the number or letter marked in the lower right corner of the icon.
• Use only the procedures described above to enter a mode. If you use any other
procedure, you may end up in a mode that is different than the one you thought
you selected.
The following explains the meaning of each icon.
IconMeaning
Use this mode for arithmetic calculations and function calculations, and for calculations involving
binary, octal, decimal and hexadecimal values.
Use this mode to perform single-variable (standard deviation) and paired-variable (regression) statistical calculations, and to draw statistical graphs.
Use this mode for storing and editing matrices.
Use this mode for storing and editing numeric
data.
Use this mode to store graph functions and to
draw graphs using the functions.
Use this mode to store graph functions and to
draw multiple versions of a graph by changing the
values assigned to the variables in a function.
3
2Selecting Icons and Entering Modes
IconMeaning
Use this mode to store functions, to generate a
numeric table of different solutions as the values
assigned to variables in a function change, and
to draw graphs.
Use this mode to store recursion formulas, to generate a numeric table of different solutions as the
values assigned to variables in a function change,
and to draw graphs.
Use this mode to draw graphs of implicit functions.
Use this mode to solve linear equations with two
through six unknowns, quadratic equations, and
cubic equations.
Use this mode to store programs in the program
area and to run programs.
Use this mode to transfer memory contents or
back-up data to another unit.
Use this mode to adjust the contrast of the display.
Use this mode to check how much memory is
used and remaining, to delete data from memory,
and to initialize (reset) the calculator.
k Using the Set Up Screen
The first thing that appears when you enter a mode is the mode’s set up screen,
which shows the current status of settings for the mode. The following procedure
shows how to change a set up.
uTo change a mode set up
1. Select the icon you want and press w enter a mode and display its initial screen.
Here we will enter the RUN Mode.
2. Press !Z to display the mode’s set up
screen.
• This set up screen is just one possible example. Actual set up screen contents will differ
according to the mode you are in and that
mode’s current settings.
123456
4
Selecting Icons and Entering Modes2
3. Use the f and c cursor keys to move the highlighting to the item whose
setting you want to change.
4. Press the function key (1 to 6) that is marked with the setting you want to
make.
5. After you are finished making any changes you want, press J to return to the
initial screen of the mode.
k Set Up Screen Function Key Menus
This section details the settings you can make using the function keys in the set up
display.
The Dual Screen Mode setting you can select differs depending upon whether you
are using the GRAPH Mode set up screen or the T ABLE/RECUR Mode set up screen.
GRAPH Mode
1 (Grph) ...... Divides screen into two
parts, each of which can be
used for graphing.
2 (GtoT) ...... Divides screen into two
parts for generation of numeric table from graph.
3 (Off).......... Dual Screen off.
TABLE/RECUR Mode
1 (T+G) ....... Divides screen into two
parts, one for graphing and
one for a numeric table.
2 (Off).......... Dual Screen off.
123456
123456
123456
P.215
uSimultaneous Graph Mode (Simul Graph)
1 (On).......... Turns on simultaneous
graphing of all functions in
memory.
2 (Off).......... Simultaneous graphing of f
(graphs drawn one-byone).
uDynamic Graph Type (Dynamic Type)
1 (Cnt)......... Continuous drawing of Dy-
namic Graphs.
2 (Stop)....... Automatic stopping of Dy-
namic Graph drawing after
10 draws.
123456
123456
8
P.238
P.238
Selecting Icons and Entering Modes2
uTable & Graph Generation Settings (Variable)
1 (Rang)...... Table generation and graph
drawing using numeric table range.
2 (LIST)....... Table generation and graph
drawing using list data.
123456
uΣ Data Display Mode (Σ Display)
1 (On).......... Turns on display of Σ value
on recursion numeric table.
2 (Off).......... Turns off display of Σ value.
123456
uImplicit Function Graph Derivative Display Mode (Slope)
1 (On).......... Turns on display of deriva-
tive at current pointer location on implicit function
graph screen.
2 (Off).......... Turns off display of deriva-
tive.
123456
Abbreviations
STAT............... Statistics
MAT ................ Matrix
DYNA ............. Dynamic Graph
RECUR .......... Recursion
EQUA ............. Equation
PRGM ............ Program
CONT ............. Contrast
MEM............... Memory
9
3. Display
k About the Display Screen
This calculator uses two types of display: a text display and a graphic display. The
text display can show 21 columns and eight lines of characters, with the bottom line
used for the function key menu, while the graph display uses an area that measures
127 (W) × 63 (H) dots.
Text DisplayGraph Display
k About Menu Item Types
This calculator uses certain conventions to indicate the type of result you can expect
when you press a function key.
• Next Menu
Example:
Selecting displays a menu of hyperbolic functions.
• Command Input
Example:
Selecting inputs the sinh command.
• Direct Command Execution
Example:
Selecting executes the DRAW command.
10
Display3
k Exponential Display
The calculator normally displays values up to 10 digits long. Values that exceed this
limit are automatically converted to and displayed in exponential format. You can
specify one of two different ranges for automatic changeover to exponential display.
2. Use f and c to move the highlighting to “Display”.
3. Press 3 (Norm).
The exponential display range switches between Norm 1 and Norm 2 each time you
perform the above operation. There is no display indicator to show you which exponential display range is currently in effect, but you can always check it by seeing
what results the following calculation produces.
Ab/caaw
(Norm 1)
(Norm 2)
All of the examples in this manual show calculation results using Norm 1.
uHow to interpret exponential format
1.2E+12 indicates that the result is equivalent to 1.2 × 1012. This means that you
should move the decimal point in 1.2 twelve places to the right, because the exponent is positive. This results in the value 1,200,000,000,000.
1.2E–03 indicates that the result is equivalent to 1.2 × 10–3. This means that you
should move the decimal point in 1.2 three places to the left, because the exponent
is negative. This results in the value 0.0012.
11
3Display
k Special Display Formats
This calculator uses special display formats to indicate fractions, hexadecimal values, and sexagesimal values.
uFractions
12
..... Indicates: 456
––––
23
uHexadecimal V alues
..... Indicates: ABCDEF12(16), which
equals –1412567278(10)
uSexagesimal V alues
..... Indicates: 12° 34’ 56.78"
• In addition to the above, this calculator also uses other indicators or symbols,
which are described in each applicable section of this manual as they come up.
k Calculation Execution Screen
Whenever the calculator is busy drawing a graph or executing a long, complex calculation or program, a black box (k) flashes in the upper right corner of the display.
This black box tells you that the calculator is performing an internal operation.
12
4. Contrast Adjustment
Adjust the contrast whenever objects on the display appear dim or difficult to see.
uTo display the contrast adjustment screen
Highlight the CONT icon in the Main Menu and then press w.
Use d and e to adjust contrast.
• d makes figures on the screen lighter, while e makes them darker.
• Holding down d or e changes the contrast setting at high speed.
After adjusting the contrast, press m to return to the Main Menu.
13
5. When you keep having problems…
If you keep having problems when you are trying to perform operations, try the following before assuming that there is something wrong with the calculator.
k Get the Calculator Back to its Original Mode Settings
1. In the Main Menu, select the RUN icon and press w.
2. Press ! Z to display the Set Up Screen.
3. Highlight “Angle” and press 2 (Rad).
4. Highlight “Display” and press 3 (Norm) to select the exponential display range
(Norm 1 or Norm 2) that you want to use.
P.3
P.395
5. Now enter the correct mode and perform your calculation again, monitoring the
results on the display.
k In Case of Hang Up
• Should the unit hang up and stop responding to input from the keyboard, press
the P button on the back of the calculator to reset the memory. Note, however,
that this clears all the data in calculator memory.
k Low Battery Message
The low battery message appears while the main battery power is below a certain
level whenever you press o to turn power on or m to display the Main Menu.
P.396
o or m
About 3 seconds later
↓
If you continue using the calculator without replacing batteries, power will automatically turn off to protect memory contents. Once this happens, you will not be able to
turn power back on, and there is the danger that memory contents will be corrupted
or lost entirely.
• You will not be able to perform data communications operations once the low
battery message appears.
14
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