following problem occured to me while i was trying to programm my own equation library.

- 1

For the example of the probeml(s) i use the formula for the area of an triangel A=(a*ha)/2

`Define LibPub recttest(a,ha)= Func :approx(((a*ha)/(2))) :EndFunc`

This code works fine, but when i use the function "recttest" i enter it in the calculator section, but the calculator does not give me the two variables which i defined in the parentheses.

So my problem is when i have a library of maybe more than 30 equations/formulas and a more complx than the area of an trinangel, HOW should i remember in which order i need to enter all the used/necessary variables. The calculator does not show me any of them, which are used in the code.

- 2

I come from an HP 50 G, which has a very nice solver function bulit in. Basically all you need to do is to enter the equation in the solver, the calculator gives you table of all variables in the equation you enter all of them, where you have an value for, and the one you are looking for is calculated. Pretty simple…

Unfortunatly the TI nspire CX CAS lags about this feature, which i dont understand.

Is there a way to programm the abbove mentioned function more like a solver. I know i could use the command solve(equation, x) but i want to use it with saved equation without entering all the terms and i wanna see which variables are used in the equation.

In other words: i have the above metioned equation programmed and can solve it for A (area), a(side) ha(hight from a) is this possible?

Thank you for your help! English is not my mother language, i hope you understand what im trying to say and there are not to many mistakes.

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