The discrete time Fourier coefficient of cos2(\(\frac{π}{8}\) n) is ______________
Posted: Thu Jul 14, 2022 11:06 am
a) \(\frac{π}{2}\)(δ(k+1] + 2δ[k] + δ[k-1])
b) \(\frac{1}{4}\)j(δ(k+1] + 2δ[k] + δ[k-1])
c) \(\frac{1}{4}\)(δ(k+1] + 2δ[k] + δ[k-1])
d) \(\frac{π}{4}\)(δ(k+1] + 2δ[k] + δ[k-1])
b) \(\frac{1}{4}\)j(δ(k+1] + 2δ[k] + δ[k-1])
c) \(\frac{1}{4}\)(δ(k+1] + 2δ[k] + δ[k-1])
d) \(\frac{π}{4}\)(δ(k+1] + 2δ[k] + δ[k-1])