CAS question.

04102015, 09:17 PM
(This post was last modified: 04132015 09:35 PM by Spybot.)
Post: #1




CAS question.
Hello Everyone!
All I'm trying to do is to solve a linear equation, I've tried many combinations of code and no success, the screenshot shows the unwanted result, here is my code: //////////////////////////////////////////////////////////////////////////////// EXPORT test() BEGIN LOCAL A,B,C; LOCAL AAA,eqn1; INPUT({{A,[0],{7,15,1}},{B,[0],{35,15,1}},{C,[0],{64,15,1}}},"I HAVE...",{"A:","B:","C:"},{"Enter Coefficient A: (Any Real Number.)","Enter Coefficient B: (Any Real Number.)","Enter Coefficient C: (Any Real Number.)"}); eqn1:=CAS(A*x+B*y+C=0); AAA:=CAS(solve(eqn1,y)); PRINT(); PRINT(eqn1); PRINT(AAA); END; //////////////////////////////////////////////////////////////////////////////////////// Any help will be appreciated! Spybot. Spybot. 

04102015, 09:24 PM
(This post was last modified: 04102015 09:30 PM by Han.)
Post: #2




RE: Probably a dumb question!
1. The CAS() command requires a string argument
2. You are mixing the use of local variables with global variables (note that A is a builtin global variable but you've also created a local variable named A as well). Try: cascmd:="solve(" + A + "*x+" + B + "*y+" + C + "=0,y)"; CAS(cascmd); You are essentially trying to use the CAS to do a symbolic solve. If that is the goal, why not just build a CAS program to do the solving, and use it as a subroutine? Graph 3D  QPI  SolveSys 

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