# Casio FX9750GII Graphic Calculator - Answered Questions & Fixed issues

1. Press [AC/ON].
3. Press [v] [v] [v] [v] [F1]
4. Press [EXIT] [AC/ON]
Try out: [SIN] 45 [EXE], result should be 0.5.

Casio FX9750GII... | Answered on Jun 01, 2016 | 6,049 views

The relational operators (=, >, <, and similar symbols) are available in two places.
If you are trying to draw an inequality graph
Press F3:Type
Press F6:> to access other tabs. The 4 inequality symbols are availabe in the following screen.

If you want the relational operators for some other purpose, you can access then in the catalog of commands.
Press 1:Run>Mat to go to the main calculator screen
Press [SHIFT][4] (Catalog] to open the Catalog.
Scroll up or down until you reach the relational operator you want.
Select it and press EXE.

Casio FX9750GII... | Answered on Sep 25, 2015 | 7,183 views

The relational operators (=, >, <, and similar symbols) are available in two places.
If you are trying to draw an inequality graph
Press F3:Type
Press F6:> to access other tabs. The 4 inequality symbols are availabe in the following screen.

If you want the relational operators for some other purpose, you can access then in the catalog of commands.
Press 1:Run>Mat to go to the main calculator screen
Press [SHIFT][4] (Catalog] to open the Catalog.
Scroll up or down until you reach the relational operator you want.
Select it and press EXE.

Casio FX9750GII... | Answered on Sep 25, 2015 | 505 views

Either you have an idea where the extremum (minimum/ maximum) might be (its x-value and maybe its y-value) and you set the center of the graph accordingly, or you zoom out until you locate it.Them you change the center of the graph to be about the position of the extremum. There is no ready made recipe that will work for any function. Just Trial and error. It might help calculating a few values of the function for x=0, x=-10. If the extremum happens to be within the table that the calculator generated to draw the graph, then it will be found.

Casio FX9750GII... | Answered on Sep 25, 2014 | 44 views

The simplest way is
X1=cos(T)
Y1=sin(T)
Set the Zoom window to SQR (square), otherwise your circle will look like an ellipse.

Casio FX9750GII... | Answered on Sep 04, 2014 | 116 views

What is the meaning of that question. Are you doing transformations? In that case you exchange the variables, not the axes.

Casio FX9750GII... | Answered on Aug 27, 2014 | 29 views

Press [SHIFT][Log_ab], below the ON button. Better use the MathIO input/Output mode.

Casio FX9750GII... | Answered on Aug 27, 2014 | 1,649 views

That backwards L is the fraction symbol. The FX9750 GII does nor have the Math display.

Casio FX9750GII... | Answered on Aug 27, 2014 | 464 views

The tangent of 40 radians is a negative number.

Casio FX9750GII... | Answered on Jun 15, 2014 | 34 views

Press [SHIFT][DEL] (INS) to toggle between INS and Overwrite. The cursor will change from a horizontal line to a vertical one.

Casio FX9750GII... | Answered on Nov 14, 2018 | 1,486 views

I believe you must rethink the design of your program
If you have several inputs that lead to a single result you want to keep for further calculations, enter the inputs, calculate your result and store in a variable. The intermediate variables can be set to zero (by precaution) and reused.
Use functions, and subroutines. Usually, in well designed programs, the scope of a variable defined inside a function or subroutine is local :It can't collide with the same name used globally (global scope). If a variable is no longer needed destroy it and reuse it..

Casio FX9750GII... | Answered on Feb 23, 2014 | 48 views

Sorry, it is not clear. When dealing with trigonometric equations, there are usually an infinite number of solutions. This is due to the trigonometric functions being periodic.

Casio FX9750GII... | Answered on Feb 05, 2014 | 81 views

Can it differentiate functions? Yes it can. More specifically, it can evaluate the 1st and 2nd derivatives of a given function at a given point (Numerical differentiation).
On any graphed function you can configure the calculator to display the first derivative. When tracing the curve, the 1st derivative is also shown at the trace point.

For any function, not graphed

Casio FX9750GII... | Answered on Jan 23, 2014 | 968 views

Hi Danny,

is it correct battery.
please check if it is good.

leave it a half an hour wit case opening or heat it with 10-20 secs with hair dryer and try again with good battery,

regards,
nuwan

Casio FX9750GII... | Answered on Jan 16, 2014 | 72 views

Create a list with the required dimension (n)
In Run>Mat, Press OPTN > F1:List
Using the keyboard , F3:Dim, and F1:List
Type in
n--->Dim List 1 (for example),
Using the F4:Fill and F1:List tabs enter
Fill(0, List 1) EXE

Casio FX9750GII... | Answered on Jan 02, 2014 | 80 views

You can create two-element lists and store the results in them.
Create a list L1 with dimension 2

Calculate the Polar coordinates of the point (1,1);: just an example

The 1st element of List 1 is the radius, and the second element is the angle (in radians). Convert it to degrees if you wish. I won't do it.
Now you must extract each element and store it in the r, and theta variables, [ALPHA][x^2] (r) and [ ALPHA] [^] (Theta)
Extract radius and store in r. Extract angle and store in Theta.

To store the rectangular coordinates (x,y) do the same as above. I will leave this pleasure to you.
Note: I inserted screen captures from my calculator but I am not sure if the Parser will accept them. If it does not I will create an image file and insert it as media.

Casio FX9750GII... | Answered on Dec 30, 2013 | 77 views

In Run>Mat screen (Menu 1) Press the OPTN key.
Press F4:CALC
Press F6>
Press F4:logab
Alternatively, In Run >Mat press [SHIFT] 4 to enter the CATALOG.
Press L to go to letter L in catalog, then scroll from there until you reach logab.

Casio FX9750GII... | Answered on Dec 04, 2013 | 195 views

Use the USB cable.
In the Link(ing) configuration set USB
Read the manual for more details.
Some software that is available is Screen Receiver by Casio

Casio FX9750GII... | Answered on Nov 22, 2013 | 24 views

You can use the SHIFTED [^] key (Xroot) . Enter the index of the root (4, 5, 6, nth), press [SHIFT][^] then the radicand.
You can also use the fact that nth-root is equivalent to a power (1/n)

Casio FX9750GII... | Answered on Nov 16, 2013 | 111 views

The F-D key converts a displayed result from fraction to decimal and vice-versa.
If in the polynomial expression a numerical coefficient is a fraction just enter it as a fraction, possibly enclosed in parentheses. If it is a decimal number just enter it as a decimal number. Converting it to a fraction is not going to generate any more precision in the result. You lose precision when you go from fraction to decimal, but you do not make a number more precise by converting it from a decimal representation to a fraction.

Casio FX9750GII... | Answered on Nov 16, 2013 | 146 views

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