将方程式传递给TI -Nspire CX作为参数？

Question

I want to pass an equation as a parameter in a program when called so I can evaluate it. My goal is to allow the equation from parameter to have a value plugged in to solve, but the value plugged is based on part of program. I also want equation to be adjustable, not hard coded by passing as parameter on program call. How can I do this?

Edit: I have tried passing it as a string in an parameter to be called.

Function("equation")

And then using define to make it a sub function in my program, then call it that way with a var passed. I can't get that to work however, I get an error: "variable undefined."

I think the issue is linking var passed to sub function to var in equation given. I also tried just passing equation, no quotes, but got similar error.

Answer 1

Here is one way to do it. The calculations were done in a Notes.

Answer 2

Maybe something like this could work for you (?):

Define LibPub foo(x,fun)=
Func
Local f
expr("f(x):="&string(fun))
Return f(x)
EndFunc

Then you can call foo with the function/equation you want, eg foo(5, x-7)