# 2D Keyboard Window

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### #1 PJay

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Posted 15 July 2004 - 07:48 AM

In "2D Keyboard Window" of the CP300, when you press "more", you will see this item :

{

What is it ?

### #2 SoftCalc

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Posted 15 July 2004 - 09:09 AM

Its for solving a system of linear equations. The equations go in the brace, and the variables you're solving for go after the bar.

### #3 PJay

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Posted 15 July 2004 - 07:20 PM

I know, but I can't use it !
Can you explain it more by a example ?

### #4 SoftCalc

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Posted 15 July 2004 - 08:12 PM

Click on the 2D symbol. Now enter..
Top box 2*x+y=3
Bottom box x-y=5

Now after the horizontal bar enter..
x,y

For en exact key sequence...
[Click 2D symbol] 2*x+y=3 [DOWN ARROW] x-y=5 [LEFT ARROW] x,y

NOTE: If the cursor is in the column of equations you can click on the 2D key again to add a row and solve a system of 3 equations. You and add as many rows as you have equations.

Right now it only solves a linear system of equations. I've seen a request in this forum to have it solve non-linear equations, so who knows what will happen in the future.

### #5 PJay

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Posted 17 July 2004 - 06:35 AM

Oh ! my problem was "x,y" . Thanks !

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