Which of the following is the backward difference for the derivative o – McqOptions

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1.	Which of the following is the backward difference for the derivative of y(t) with respect to t for t=nT?
A.	[y(n)+y(n+1)]/T
B.	[y(n)+y(n-1)]/T
C.	[y(n)-y(n+1)]/T
D.	[y(n)-y(n-1)]/T
Answer» E.

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