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1. |
The z-transform of x[n]= {2,4,5,7,0,1} (5 as the reference variable) is ___________ |
A. | 2z2 + 4z + 5 +7z + z3, z≠∞ |
B. | 2z-2 + 4z-1 + 5 + 7z + z3, z≠∞ |
C. | 2z-2 + 4z-1 + 5 + 7z + z3, 0<|z|<∞ |
D. | 2z2 + 4z + 5 + 7z-1 + z3, 0<|z|<∞ |
E. | is ___________a) 2z2 + 4z + 5 +7z + z3, z≠∞b) 2z-2 + 4z-1 + 5 + 7z + z3, z≠∞c) 2z-2 + 4z-1 + 5 + 7z + z3, 0<|z|<∞d) 2z2 + 4z + 5 + 7z-1 + z3, 0<|z|<∞ |
Answer» E. is ___________a) 2z2 + 4z + 5 +7z + z3, z≠∞b) 2z-2 + 4z-1 + 5 + 7z + z3, z≠∞c) 2z-2 + 4z-1 + 5 + 7z + z3, 0<|z|<∞d) 2z2 + 4z + 5 + 7z-1 + z3, 0<|z|<∞ | |