The overall system in the dotted box in Figure P2.74 can be shown to be linear and time...

The overall system in the dotted box in Figure P2.74 can be shown to be linear and time invariant.

(a) Determine an expression for H(e^jω), the frequency response of the overall system from the input x[n] to the output y[n], in terms of H1(e^jω), the frequency response of the internal LTI system. Remember that (−1)ⁿ = ej^πn.

(b) Plot H(e^jω) for the case when the frequency response of the internal LTI system is