3 replies to this topic

[ChrisPHL]

"How To Derivate And Save A Given Formula Within A Program?"

Hi?there,

I?ve?written?a?program?that?successfully?stores?a?formula?to?"Y1":?

"F(X)"?->Y1

The second formula shall be the derivatioin of the first given one. I have to type in it manually yet?("G(X)"?->Y2") but I think it could be better, s.th. like this:

"G(X)="d/dx(Y1)->Y2

--> Syntax ERROR (at?the1st?"d")
Does anybody of you know a way to do this right? Let me know, please!

[alias4399]

I dont think this calculator supports symbolic differentiation.
You must input a value and the calculator will give you the result of substituting that value into the derivate of the function, for example:

d/dx(x^2), 3
output: 6

because d/dx(x^2) = 2x, and 2(3) = 6

[ChrisPHL]

May be I?ve chosen the wrong functioin to do it, it was just an example to explain what I wanted to do but I couldn?t find any command like "diff(" in the programing interface.
Any idea how to make it?

EDIT: I found it. There were to add quotation marks as follows:

"d/dx(Y1,X)"->Y2

This does not add the derivation of formula "Y1" but axactly the command to derivate the first equation and is enough to work with.

[kucalc]

The Algebra FX does in fact do symbolic differentiation. The problem though is you can't use CAS functions in your BASIC programs.

BTW, welcome to the UCF, ChrisPHL.