Q.

The system described by the difference equation y(n) – 2y(n-1) + y(n-2) = X(n) – X(n-1) has y(n) = 0 and n<0. If x (n) = δ(n), then y (z) will be?

A. 2
B. 1
C. 0
D. -1
Answer» C. 0
Explanation: given equation = y (n) – 2y (n- 1) + y (n-2) = x (n) – x (n-1) has y (n) = 0
956
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