A signal V(n) is defined byV[n] =1; n = 1– 1; n = –

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A signal V(n) is defined by
V[n] = 1; n = 1
– 1; n = – 1
0; n = 0 and |n| > 1

What is the value of the composite signal defined as V[n] + V[– n]?

1. 0 for all integer values of n
2. 2 for all integer values of n
3. 1 for all integer values on n
4. – 1 for all integer values of n

Correct Option: A

Given

V[n] =		1;	n = 1
		-1;	n = – 1
		0 ;	n=0 and \|n\| > 1

On adding both the plots i.e., V[n] + V[– n] = 0
Hence, alternative (A) is the correct choice.