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Casio cfx 9850gcplus graphic calculator Handleiding

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User’s Guide
fx-9750G PLUS
CFX-9850G PLUS
CFX-9850GB PLUS
CFX-9850GC PLUS
CFX-9950GB PLUS
fx-9750G PLUS owners...
This manual covers the operations of various different calculator models. Note the meaning of the following
symbols when using this manual.
Meaning
Indicates information about a function that is not supported by the fx-9750G PLUS.
You can skip any information that has this mark next to it.
CFX
Symbol
8-1 Before Trying to Draw a Graph
kk
kk
k Entering the Graph Mode
On the Main Menu, select the GRAPH icon and enter the GRAPH Mode. When
you do, the Graph Function menu appears on the display. You can use this menu
to store, edit, and recall functions and to draw their graphs.
• {SEL} ... {draw/non-draw status}
• {DEL} ... {function delete}
• {TYPE} ... {graph type menu}
• {COLR} ... {graph color}
• {GMEM} ... {graph memory save/recall}
• {DRAW} ... {graph draw}
Memory area
Use
f
and
c
to change selection.
CFX
indicates {COLR} is not supported by the fx-9750G PLUS.
CFX
CASIO ELECTRONICS CO., LTD.
Unit 6, 1000 North Circular Road,
London NW2 7JD, U.K.
Important!
Please keep your manual and all information handy for
future reference.
i
BEFORE USING THE CALCULATOR
FOR THE FIRST TIME...
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. Making sure that you do not accidently press the o key, attach the case to the
calculator and then turn the calculator over. Remove the back cover from the calculator
by pulling with your finger at the point marked
1.
2. Load the four batteries that come with calculator.
• Make sure that the positive (+) and negative (–) ends of the batteries are facing
correctly.
3. Remove the insulating sheet at the location marked “BACK UP” by pulling in the
direction indicated by the arrow.
4. Replace the back cover, making sure that its tabs enter the holes marked 2 and turn
the calculator front side up. The calculator should automatically turn on power and
perform the memory reset operation.
1
BACK UP
BACK UP
2
ii
5. Press m.
• If the Main Menu shown above is not on the display,
press the P button on the back of the calculator to
perform memory reset.
6. Use the cursor keys (f, c, d, e) to select the CONT icon and press
w or simply press
c
E
to display the contrast adjustment screen.
7. Adjust the contrast.
uTo adjust the contrast
•Use f and c to move the pointer to CONTRAST.
•Press e to make the figures on the display darker, and d to make them
lighter.
uTo adjust the tint
1. Use f and c to move the pointer to the color you want to adjust (ORANGE,
BLUE, or GREEN).
2. Press e to add more green to the color, and d to add more orange.
8. To exit display contrast adjustment, press m.
* The above shows the fx-9750G
PLUS screen.
* The above shows the CFX-9850
(9950)G(B) PLUS screen.
fx-9750G PLUSCFX-9850(9950)GB PLUS,
CFX-9850G PLUS
CFX
CFX
P button
ABOUT THE COLOR DISPLAY
The display uses three colors: orange, blue, and green, to make data easier to
understand.
•Main Menu • Display Color Adjustment
•Graph Function Menu
•Graph Display (Example 1) • Graph Display (Example 2)
•Graph-To-Table Display • Dynamic Graph Display
•Table & Graph Numeric Table • Recursion Formula Convergence/
Divergence Graph Example
iii
CFX
•Statistical Regression Graph Example
•When you draw a graph or run a program, any comment text normally appears
on the display in blue. You can, however, change the color of comment text to
orange or green.
Example:
To draw a sine curve
1. Enter the GRAPH Mode and input the following.
3(TYPE)1(Y=)
(Specifies rectangular coordinates.)
svwf
4
5
(Stores the expression.)
2.
4(COLR)
2
3456
•Press the function key that corresponds to the color you want to use for the
graph:
1 for blue, 2 for orange, 3 for green.
3. 2(Orng)
(Specifies the graph color.)
J
6
4.6(DRAW)
(Draws the graph)
You can also draw multiple graphs of different color on the same screen, making
each one distinct and easy to view.
iv
CFX
KEYS
Alpha Lock
Normally, once you press a and then a key to input an alphabetic character, the key-
board reverts to its primary functions immediately. If you press ! and then a, the
keyboard locks in alpha input until you press a again.
v
KEY TABLE
vi
Page Page Page Page Page Page
128
Page Page Page Page Page
132 113
47 46
24746
154 144 120
369 4
227283
46 46
46 46
45 45
45 45
21
20
36
36
36
36
39
36
45
36
47
36
49
49
47
36
45
45
22
49
Turning Power On And Off
Using Modes
Basic Calculations
Replay Features
Fraction Calculations
Exponents
Graph Functions
Dual Graph
Box Zoom
Dynamic Graph
Table Function
Quick-Start
Quick-Start
viii
Welcome to the world of graphing calculators.
Quick-Start is not a complete tutorial, but it takes you through many of the most common
functions, from turning the power on, to specifying colors, and on to graphing complex
equations. When you’re done, you’ll have mastered the basic operation of this calculator and
will be ready to proceed with the rest of this user’s guide 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:
Press
fh
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
o
.
TURNING POWER ON AND OFF
To turn power on, press o.
To turn power off, press !
o
OFF
.
Note that the calculator automatically turns 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
This calculator 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 s el ect the RUN Mode
1. Press m to display the Main Menu.
* The above shows the CFX-9850
(9950)G(B) PLUS screen.
Quick-Start
ix
2. Use defc to highlight RUN and then
press w.
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 calcula-
tor automatically applies true algebraic logic to calculate the result.
Example:
15 × 3 + 61
1. Press o to clear the calculator.
2. Pressbf*d+gbw.
Parentheses Calculations
Example:
15 × (3 + 61)
1. Press
bf*(d
+gb)w.
Built-In Functions
This calculator 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.
Quick-Start
x
1. Press o.
2. Press
!
m
SET UP
to switch the set up display.
3. Press cccc1 (Deg) to specify
degrees as the angle unit.
4. Press J to clear the menu.
5. Press o to clear the unit.
6. Press 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:
To change the calculation in the last example from (25 × sin 45˚) to (25 × sin
55˚)
1. Press
d to display the last calculation.
2. Press d twice to move the cursor under the 4.
3. Press f.
4. Press
w to execute the calculation again.
Quick-Start
xi
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
15
/
16
+
37
/
9
1. Press o.
2. Press b$bf$
bg+dh$
jw.
Converting a Mixed Fraction to an Improper Fraction
While a mixed fraction is shown on the display, press !
d/c
$
to convert it to an
improper fraction.
Press
!
d/c
$
again to convert back to a mixed fraction.
Converting a Fraction to Its Decimal Equivalent
While a fraction is shown on the display, press M to convert it to its decimal equiva-
lent.
Press M again to convert back to a fraction.
Indicates 6
7
/
144
Quick-Start
xii
EXPONENTS
Example:
1250 × 2.06
5
1. Press o.
2. Press bcfa*c.ag.
3. Press
M and the ^ indicator appears on the display.
4. Press f. The ^5 on the display indicates that 5 is
an exponent.
5. Press
w.
… 14 …

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