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ECE · Q80

Signal Processing

Engineering and GATE · ECE · question 80

Q80

Consider the z-transform X(z) = 5z2 + 4z-1 + 3; 0 < |z| < ∞. The inverse z-transform x[n] is

A.
5δ[n + 2] + 3δ[n] + 4δ[n - 1]
Answer
B.
5[n - 2] + 3δ[n] + 4δ[n + 1]
C.
5u[n + 2] + 3u[n] + 4u[n - 1]
D.
5u[n - 2] + 3u[n] + 4u[n + 1]

Answer: Option A

Solution

Answer: Option A
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