Question2. Show that the Fourier series representing the periodic function f(t), where (π² f(t)=(t-π)² (-π<t<0) (0 <t<π) has period of 2π is: (-1)" 0 2 7 = *** + Σ cos nt + π sin nt n n=1 00 πT n=1 Σ sin(2n-1)t (2n-1)3 f(t) Use this result to show that a. 5780 2n=1 80 b. En 2n=1 = (-1)+1 12