Question: Consider a sequence x[n] and irs discrete-time Fourier transform X(e j ). The following is known: x[n] is real and causal, Re{X(e j )} =

Consider a sequence x[n] and irs discrete-time Fourier transform X(ejω). The following is known:

x[n] is real and causal,

Re{X(ejω)} = 5/4 – cosω.

Determine a sequence x[n] consistent with the given information.

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