What is the z-transform of the signal defined as x(n)=u(n)-u(n+N)? – McqOptions

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1.	What is the z-transform of the signal defined as x(n)=u(n)-u(n+N)?
A.	\(\frac{1+z^N}{1+z^{-1}}\)
B.	\(\frac{1-z^N}{1-z^{-1}}\)
C.	\(\frac{1+z^{-N}}{1+z^{-1}}\)
D.	\(\frac{1-z^{-N}}{1-z^{-1}}\)
Answer» E.

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