1. The problem statement, all variables and given/known data There is a sawtooth function with u(t)=t-π. Find the Fourier Series expansion in the form of a0 + ∑αkcos(kt) + βksin(kt) 2. Relevant equations a0 = ... αk = ... βk = ... 3. The attempt at a solution After solving for a0, ak, and bk, I found that a0=0, ak=0, and bk=-2/k Therefore, my fourier expansion was the summation from k=1 to infinity of -2*sin(kt)/k I think this is right, but can someone cross-reference final solutions with me? If you need to see my work I can provide that also.