 
			 
			MCQOPTIONS
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				| 1. | Find the Z-transform of a periodic sequence x(n) = {1, 0, -3, 1}? | 
| A. | X(z) = 1 – 3z-2 + z-3; |z| ≠ 0 | 
| B. | X(z) = 1 – 3z-2 + z-3; |z| ≠ ∞ | 
| C. | X(z) = 1 – 3z-2 + z-3; |z| ≠ 0 and |z| ≠ ∞ | 
| D. | X(z) = (1 – 3z-2 + z-3)/(1 – z-4) | 
| Answer» E. | |