Fourier series

The function f has period 2 and is defined by:

http://i143.photobucket.com/albums/r153/tvb1/4.jpg

Sketch the graph of f for -3 < x < 3.

Find the Fourier series of f. Write down the values of a0, a1, a2, b1 and b2.
(You may leave your answer in terms of π.)



Thank Q