The z-transform of \((\frac{1}{4})^n\) (u[n] – u[n-5]) is _________

1.	The z-transform of \((\frac{1}{4})^n\) (u[n] – u[n-5]) is __________
A.	\(\frac{z^5 – 0.25^5}{z^4 (z-0.25)}\), z>0.25
B.	\(\frac{z^5 – 0.25^5}{z^4 (z-0.25)}\), z>0
C.	\(\frac{z^5 – 0.25^5}{z^3 (z-0.25)}\), z<0.25
D.	\(\frac{z^5 – 0.25^5}{z^4 (z-0.25)}\), all z
Answer» E.

Discussion

Given the z-transform pair\(X[n] \leftrightarrow \frac{32}{z^2-16}\), |z|
Given the z-transform pair\(X[n] \leftrightarrow \frac{32}{z^2-16}\), |z|
Given the z-transform pair\(X[n] \leftrightarrow \frac{32}{z^2-16}\), |z|
Given the z-transform pair\(X[n] \leftrightarrow \frac{32}{z^2-16}\), |z|
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