Compute the coefficients of the Fourier series for the 2-periodic function f(t) = 2+5 cos(2t) +9 sin(3t). (By a 2-periodic function we mean a function that repeats with period 2. This means we're computing the Fourier series on the interval [-1,1].) a0= 02 03= 04 b = b = b3= bs= help (numbers)