# Cp300 What's The Use Of...

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### #1 Nexus

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Posted 28 April 2004 - 03:34 PM

Hi Techbros. !!, anyone knows what is the use of this simbol in the 2D keyboard pad ??? In the manual appears no mention about it.

{ |o

(A bracket, 2 places for values, a vertical var and below, another place for other value)

### #2 Lovecasio

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fx 570 MS, Casio AFX 2.0+, ClassPad 300

Posted 28 April 2004 - 04:00 PM

Hi.
This symbol is used to solve simultaneous equation.
Ex: 2x+3y=1
3x-2y=0 {x,y}

I think they should make this symbol be able to solve not only the kind above. Example it can solve : x^2+y^2=1
2x+y=1

### #3 Nexus

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Posted 28 April 2004 - 04:28 PM

mmmm...I'd try your example entering both equations in the places but the system give the following message "Invalid Dimension", what went wrong ???, please could you detail an exercise that works ??

### #4 Lovecasio

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fx 570 MS, Casio AFX 2.0+, ClassPad 300

Posted 29 April 2004 - 02:20 AM

Hi.
First, tap the symbol.
Next, enter first equation: 2x+3y=1.
Then, tap the lower line ( 2nd line ) or press the cursor key ( down ). Enter second equation: 3x-2y=0.
After that, tap the lower-right box ( beside the vertical ) and enter x,y.
The last step is tap or press EXE.
You will reveive the result: {x=2/13,y=3/13}.
The error table " Invalid Demension " appears when you do not enter enough parameter. Example, lets solve:
2x+3y-4z=1
x+y+2z=3
3x-2y+z=0

First , tap the symbol, and tap it once more ( it will appear 3 line )
Second, input 3 equation.
Then, if you just specify x,y in lower-right box, the above error message appear. You must enter x,y,z in order to solve.

I hope this can help

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