What is the z-transform of the signal x(n)=nanu(n)? – McqOptions

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1.	What is the z-transform of the signal x(n)=naⁿu(n)?
A.	( frac{(az)^{-1}}{(1-(az)^{-1})^2} )
B.	( frac{az^{-1}}{(1-(az)^{-1})^2} )
C.	( frac{az^{-1}}{(1-az^{-1})^2} )
D.	( frac{az^{-1}}{(1+az^{-1})^2} )
Answer» D. ( frac{az^{-1}}{(1+az^{-1})^2} )

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