The system described by the difference equation y(n) â€“ 2y(n-1) – McqOptions

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1.	The system described by the difference equation y(n) â€“ 2y(n-1) + y(n-2) = X(n) â€“ X(n-1) has y(n) = 0 and n<0. If x (n) = Î´(n), then y (z) will be?
A.	2
B.	1
C.	-1
Answer» D.

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