The z-transform X(z) of the signal x(n)=anu(n) has:
A. One pole at z=0 and one zero at z=a
B. One pole at z=0 and one zero at z=0
C. One pole at z=a and one zero at z=a
D. One pole at z=a and one zero at z=0
Answer:A
The z-transform X(z) of the signal x(n)=anu(n) has:
A. One pole at z=0 and one zero at z=a B. One pole at z=0 and one zero at z=0 C. One pole at z=a and one zero at z=a D. One pole at z=a and one zero at z=0
Explanation: The z-transform of the given signal is X(z)= z/(z-a)