If the z-transform of a sequence x[n] = {1, 1, -1, -1} is X[z], then t – McqOptions

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1.	If the z-transform of a sequence x[n] = {1, 1, -1, -1} is X[z], then the value of \(X\left( {\frac{1}{2}} \right)\) is
A.	- 9
B.	1.875
C.	-1.125
D.	15
Answer» B. 1.875

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