Fourier Series of simple function.

[Tschew]

f(x) = cos(x) x from [-PI, 0]
f(x) = -cos(x) x from ] 0, PI]

I'm not sure how to deal with getting a Fourier series for this function. (don't bother explaining theory, I know that, just can't apply it in this case) Could anyone help me out?

 

[Tschew]

okay, I think I got it!

Ah well, what a stupid question that was. I figured it out.. now I just need to see what happens for even and odd harmonics and that'll be that. Thanks.