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1. The transfer function of a BIBO stable discrete system is given as H(z) = In((1-1.2z-1)(1-0.9z-1)) (a) Find h(n). (b) Find the ROC for H(z). (c) Find the pole-zero location for the system W(z) = dH(z) 2an (d) If x(n)-2 cos(EN, } 3 r(n-6), goes through the H(z) system above, find y(n).

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