Determining if a periodic function is even, odd, or neither from a graph

[liam2708]

Hello I am stuck on the following question:

Consider the following graph of a periodic function, period T.
http://img157.imageshack.us/img157/4337/waveme4.png

(a) Clearly giving the reasons, state whether this function is even, odd or neither.

(b) With reference to all relevant symmetry features, state which parts of which harmonics are present in the Fourier series representation of this periodic function.

I have attempted part A and think I have done it correctly, however I have no idea where to start with part b. Any help would be greatly appreciated.

Thanks!

 

[Hurkyl]

(a) Clearly giving the reasons, state whether this function is even, odd or neither.

(b) With reference to all relevant symmetry features, state which parts of which harmonics are present in the Fourier series representation of this periodic function.

Doesn't the answer to part (a) tell you things about the Fourier series?