What is the system function of the filter with impulse response hk(n)? – McqOptions

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1.	What is the system function of the filter with impulse response h_k(n)?
A.	( frac{1}{1-W_N^{-k} z^{-1}} )
B.	( frac{1}{1+W_N^{-k} z^{-1}} )
C.	( frac{1}{1-W_N^k z^{-1}} )
D.	( frac{1}{1+W_N^k z^{-1}} )
Answer» B. ( frac{1}{1+W_N^{-k} z^{-1}} )

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