To determine the effects of pole and zero locations, use Simulink to calculate the unit step responses of the discrete transfer functions shown below for the first six sampling instants, k = 0 to k = 5. What conclusions can you make concerning the effect of pole and zerolocations?

(a) (b) 1+ 0.7z (c) 1- 0.72- (d) (1 + 0.72-)(I - 0.3z ) 1- 0.5z- (1 + 0.7z (1 - 0.321) 1-0.2z-1 (1 + 0,6z-)(1- 0.3z) (e) ()