1.

The z-transform of u[n] is _________

A. \(\frac{1}{1-z^{-1}}\), |Z|>1
B. \(\frac{1}{1-z^{-1}}\), |Z|<1
C. \(\frac{z}{1-z^{-1}}\), |Z|<1
D. \(\frac{z}{1-z^{-1}}\), |Z|>1
Answer» B. \(\frac{1}{1-z^{-1}}\), |Z|<1


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