Consider a signal \(x\left[ n \right] = {\left( {\frac{1}{2}} \right)^ – McqOptions

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1.	Consider a signal \(x\left[ n \right] = {\left( {\frac{1}{2}} \right)^n}1\left[ n \right]\), where 1[n] = 0 if n < 0, and 1[n] = 1 if n ≥ 0. The z-transform of x[n - k], k > 0 is \(\frac{{{z^{ - k}}}}{{1 - \frac{1}{2}\;{z^{ - 1}}}}\) with region of convergence being
A.	\|z\| < 2
B.	\|z\| > 2
C.	\|z\| < 1/2
D.	\|z\| > 1/2
Answer» E.

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