Forum TI-Planet.org

Hi, first of all, sorry for posting in English, but I did not find any posts in the forum that are in English ...

I'm trying to make a program, and at the end of the code, I check which variables are missing to be calculated and solve them through a system ... to do this, I keep the list of unused variables in another variable, but texas Does not accept such action.

In the following image I gave an example of the problem!






Is there any way to resolve this?

Thank you all.

You may force the OS to replace "vars" by its value before solving using string tools as shown below :

Code: Select all

vars:={a,b}
syst:={a+b=2,2a+b=3}
expr("solve(" & string(syst) & "," & string(vars) & ")")

Bisam wrote:You may force the OS to replace "vars" by its value before solving using string tools as shown below :

Code: Select all

vars:={a,b}
syst:={a+b=2,2a+b=3}
expr("solve(" & string(syst) & "," & string(vars) & ")")

Hi, Bisam, thankyou so much for responding!
I had just thought of this solution and it worked!

my code look like this: (same ideia)

Code: Select all

d:="{a,b}"
expr("solve([[a+b=2][2*a+b=3]],"&d&")")

well...

Thanks a lot for your help!