Which of the following is the backward difference for the derivative of y(t) with respect to ‚Äö√Ñ√∂‚àö√ë‚àö‚â§t‚Äö√Ñ√∂‚àö√ë‚àö¬• for t=nT?$

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

1.	Which of the following is the backward difference for the derivative of y(t) with respect to ‚Äö√Ñ√∂‚àö√ë‚àö‚â§t‚Äö√Ñ√∂‚àö√ë‚àö¬• 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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Which of the following is the backward difference for the derivative of y(t) with respect to ‚Äö√Ñ√∂‚àö√ë‚àö‚â§t‚Äö√Ñ√∂‚àö√ë‚àö¬• for t=nT?$

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