Derive- fourier series

[Philsutton]

Right im trying to do some uni work using derive, its a crap mathematical program for equations. I dont suppose anyone knows anything about it, im not that good with computers as it is. Anyway i can type in some random equations i need but i aint got a clue how to work out the expansions for fourier series. The help on it is crap as well as its just jibberish.

[hendrix]

Well i kinda know a bit about fourier series......... its a right pain in the a*** and the guy who invented it looks like a gimp :lol:
what program are u using and what is the fourier expansion for???
i might be able to help

[Philsutton]

im using derive as the program i just cant seem to get any of it to work. Plus they are all gimps

[hendrix]

whats the fourier series describing?

[Philsutton]

wants me to draw a graph from the 3 coefficients and the final fourier series itself, or something like that

[hendrix]

lol i cant be a****d to think of how 2 do it, got a dissertation to write lol. besides my maths is crap