Let x[n] be a periodic signal with period N and Fourier coefficients ak. (a) Express the
Chapter 3, Problem 3.56(choose chapter or problem)
Let x[n] be a periodic signal with period N and Fourier coefficients ak. (a) Express the Fourier coefficients bk of Jx[nJl2 in terms of ak. (b) If the coefficients ak are real, is it guaranteed that the coefficients bk are also real?
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