EC > GATE 2015 SET-3 > Discrete-Time Systems
A realization of a stable discrete time system is shown in the figure. If the system is excited by a unit step sequence input x[n], the response y[n] is
A
4(-1/3)n u[n] - 5(-2/3)n u[n]
B
5(-2/3)n u[n] - 3(-1/3)n u[n]
C
5(1/3)n u[n] - 5(2/3)n u[n]
D
5(2/3)n u[n] - 5(1/3)n u[n]

Correct : d

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