If x(n)=an, then what is one sided z-transform of x(n-2)? – McqOptions

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1.	If x(n)=an, then what is one sided z-transform of x(n-2)?
A.	\(\frac{z^{-2}}{1-az^{-1}} + a^{-1}z^{-1} + a^{-2}\)
B.	\(\frac{z^{-2}}{1-az^{-1}} – a^{-1}z^{-1} + a^{-2}\)
C.	\(\frac{z^{-2}}{1-az^{-1}} + a^{-1}z^{-1} – a^{-2}\)
D.	\(\frac{z^{-2}}{1+az^{-1}} + a^{-1}z^{-1} + a^{-2}\)
Answer» B. \(\frac{z^{-2}}{1-az^{-1}} – a^{-1}z^{-1} + a^{-2}\)

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