# How to add more variables in the Casio Fx - 9750 gii calculator

3 replies to this topic

### #1 dubanrincon

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Posted 17 October 2017 - 03:46 AM

Estoy haciendo un programa, para resolver ecuaciones lineales, al momento de codificar una 6x6, necesito muchas mas variables. Ejemplo: Utilizo A,B,C,D,E,F,J,H...W,X,Y,X. Necesito aun mas.

I am doing a program, to solve linear equations, when coding a 6x6, I need many more variables. Example: I use A, B, C, D, E, F, J, H ... W, X, Y, X. I need even more.

I am doing a program, to solve linear equations, when coding a 6x6, I need many more variables. Example: I use A, B, C, D, E, F, J, H ... W, X, Y, X. I need even more.

### #2 GodOfCows

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fx-9860gii, fx-9750gii, TI-92, TI-89, TI-83 Plus

Posted 10 November 2017 - 04:33 PM

I don't believe so. You can also use r (ALPHA and x^2) and the 0 with a slash through it (idk what is is, ALPHA and ^)

You could try using a matrix to store data, I don't know how to. I'm not sure about this either but maybe use an array, though I don't think that is possible. Best bet is using a matrix.

Found this from the tutorial of the Casio basic on another post on this forum

////////////////////////////////////////////////////

Matrices – A matrix is a two dimensional list
Here is a visual of a 5x4 matrix.
[ ][ ][ ][ ]
[ ][ ][ ][ ]
[ ][ ][ ][ ]
[ ][ ][ ][ ]
[ ][ ][ ][ ]
Matrices are just like lists except that they are two dimensional, I like to use them for maps, especially tiled maps. To use a matrix use Mat (letter A~Z)[Y,X] (Mat A[1,1]), the X and Y are reversed, make sure not to confuse them.

//////////////////////////////////////////////////////////////

Edited by GodOfCows, 10 November 2017 - 07:44 PM.

### #3 piu58

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Posted 28 November 2017 - 07:12 AM

You may split your program in parts. Every part has to be so small that A-Z are sufficient. To call a subroutine, use some kind of Push and Pop :

Push:

{A,B..Z} -> List 9

Pop (I found no shorter form):

List 9 [ 1 ]->A

List 9 [ 2 ]->B

:

List 9 [ 26 ]->Z

Best store Push and Pop as Programs

Edited by piu58, 28 November 2017 - 07:13 AM.

### #4 Krtyski

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FX-502P, FX-602P, fx-603P,
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fx-CG50

Posted 27 January 2018 - 06:37 PM

Hi

With Push & Pop way of doing, Matrix is very little bit faster than List.

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