Recent content by calcgirl

I was told that no integration was needed for this problem and it basically boils down to trig identities.

fourier series, please help! Homework Statement Find the Fourier series of f(x)=(sin x)^2. Homework Equations The Attempt at a Solution I know that I need to use the double angle formulas for this problem: (sin x)^2=1/2-1/2(cos 2x) but I do not know where to go from here.