Program with variable

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TI-Basic on Ti-nspire cx

Program with variable

Dev (guest) 04 Feb 2016 01:10

I'm fairly new to the ti-basic on Ti-nspire cx and need to find the basics of this problem…

Say I want to create a program: test().

Define LibPub test(a,b,c)=
Prgm
:Disp nSolve(a+b=c,x)
:EndPrgm

^Obviously wrong but read on.
Say I plug in

test(x,4,9)

I want to answer to spit out five, but the calculator keeps saying variable is not defined (I assume it is the x).
Any suggestions? This is just a skill I need to learn to make a better program.

Re: Program with variable

Firts Glimphs 05 Feb 2016 05:25

Your arguments to nSolve contain four variables (a, b, c, and x), but the program accepts only three. The variable x, as written into the program, is not the same as the x you're providing as an argument. That x is substituted in for a when the program is executed, and the x within the program remains undefined.