Question: 4. Sampling: We want to sample the signals below and recover each signal from its samples by filtering. For each signal, find the minimum sampling

4. Sampling: We want to sample the signals below and recover each signal from its samples by filtering. For each signal, find the minimum sampling rate that allows perfect reconstruction. (a) sinc?(20t) (b) cos(100z) (c) sinc? (20t) cos(1007t)

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