Q.1
Find the Z-transform of the causal sequence x(n) = {1,0,-2,3,5,4}. (1 as the reference variable)
  • a) 1 – 2z-2 + 3z-3 + 5z-4 + 4z-5
  • b) 1 – 2z2 + 3z3 + 5z4 + 4z5
  • c) z-1 – 2z2 + 3z3 + 5z4 + 4z5
  • d) z – 2z3 + 3z4 + 5z5 + 4z6
Q.2
Find the Z-transform of the anticausal sequence x(n) = {4,2,3,-1,-2,1}. (1 as the reference variable)
  • a) 4z5 + 2z4 + 3z3 – z2 – 2z + 1
  • b) 4z-5 + 2z-4 + 3z-3 -z-2 – 2z-1 + 1
  • c) -4z5 – 2z4 – 3z3 + z2 + 2z – 1
  • d) -4z-5 – 2z-4 – 3z-3 + z-2 + 2z-1 – 1
0 h : 0 m : 1 s