1.

What is the z-transform of the signal x(n)=(0.5)nu(n)?

A. ( frac{1}{1-0.5z^{-1}};ROC |z|>0.5 )
B. ( frac{1}{1-0.5z^{-1}};ROC |z|<0.5 )
C. ( frac{1}{1+0.5z^{-1}};ROC |z|>0.5 )
D. ( frac{1}{1+0.5z^{-1}};ROC |z|<0.5 )
Answer» B. ( frac{1}{1-0.5z^{-1}};ROC |z|<0.5 )


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