Question: Given a lowpass FIR filter with transfer function (H(z)), describe what happens to the filter frequency response when: (a) (z) is replaced by (-z). (b)

Given a lowpass FIR filter with transfer function \(H(z)\), describe what happens to the filter frequency response when:

(a) \(z\) is replaced by \(-z\).

(b) \(z\) is replaced by \(z^{-1}\).

(c) \(z\) is replaced by \(z^{2}\).

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