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3. Compute the Fourier transform of each of the following, and use the Parseval's relation to find the energy of each of the following:

3. Compute the Fourier transform of each of the following, and use the Parseval's relation to find the energy of each of the following: (c) a[n] = 3" sin(3Tn/4)u[-n] (e) r[n] = (sin/4) cos(3rn/2) %3D

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