1. The problem statement, all variables and given/known data Compute the power contained in the periodic signal x(t) = 10.0[cos(160.7*pi*t)]^4 2. Relevant equations 3. The attempt at a solution Hey guys, I have just started Fourier Series and am struggling with this one. Without writing all my calculations, -I start with inverse Euler formula. -Then integrate x(t)*e^(-j*ω*k*t) with respect to t. From 0 to (To) -Then consider the value of the final exponentials when k is an odd and even number. However i calculate that the answer for ak for any value of k to be 15/4? Once again I have only started Fourier recently so any direction would be much appreciated.