i wrote a program that derived functions for you once, gone now though.
I wrote a program that calculated slope and y-intersect from two points on a line.Basic, but it save me unnecessary work like a mother.
That would help me on my homework a lot :O
derivatives a pretty easy anyway.
Where can one learn how to do such programming? I own a Texas Instruments TI-80something Silver Edition, and I assume that's the type of calculator you're talking about.