[SOLVED] Fourier series - Trigonometric

Hello everyone!

I have the following problem:

I have a function g(t) that is 2*pi perodic as follow:

g(t)=e^(-t)

0<t<2*pi

Calculate the *trigonometric* Fourier series for g(t)

I need som guidance to solve it completely. I have started my solution but got stuck.

Here how I started:

(Page 1) http://img249.imageshack.us/img249/3...oblempage1.jpg

(Page 2) http://img526.imageshack.us/img526/8...oblempage2.jpg

I do appriciate any help to comlpete my solution.

Thanks