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[2 Marks] 18. If (z) and u[n]-cos(2n)지지 the correct value of V(z) will be (2z-1) js 2 2zei5-1 2ze-15-1 2 2zel5-12ze-15-1 19.21. An LTI system is described by the following input/output difference equation: yln] 0.12yln x[n] (assume zero initial cond

[2 Marks] 18. If (z) and u[n]-cos(2n)지지 the correct value of V(z) will be (2z-1) js 2 2zei5-1 2ze-15-1 2 2zel5-12ze-15-1 19. Determine the Z-transform of x[n]. [2 Marks each] n] sinl0n)u[n]0.3" n] 0.5" cos (10n)u[n] In]-(0.3) u[/n] The transfer function of a discrete time system is H(z)- 20. 1+2z3z Use the inverse Z-transform to determine the system difference equation [4 Marks]
21. An LTI system is described by the following input/output difference equation: yln] 0.12yln x[n] (assume zero initial conditions) Use the Z- transform to obtain the system transfer function H(z)- Y(z) X(z) . a) [4 Marks] b) If the input signal to the system above is xIn] n(0.13"lu(n), determine the Yz) 5 Marks] c) Use the inverse Z-transform to determine y[n] from Y(z) in part b) above. [4 Marks]
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[2 Marks] 18. If (z) and u[n]-cos(2n)지지 the correct value of V(z) will be (2z-1) js 2 2zei5-1 2ze-15-1 2 2zel5-12ze-15-1 19. Determine the Z-transform of x[n]. [2 Marks each] n] sinl0n)u[n]0.3"...
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