Recent content by mrMeister

Watch my comment - I have solved this question but without the use of the relation for z(t). I wanted to ask if it is hidden somewhere throughout the solution.

My try: I tried to take the expression for the decomposition coefficients and put it into the equation that I had to prove. Then, I tried to work with the integral limits in order to get into Wiener-Khinchin theorem or maybe Fourier transform of delta function but I didn't see any success in...