4. Obtain the z-transform of the following: A. B. C. D. X(z) X(z) X(z): X(z) x(n) = I = n (⑥)", -12 I " 5 -32-1 (1-z-¹)(1-1/2-¹1)' (1-z-¹)(1-z-¹) n20 n < 0 5 62 (1-z-¹) (1 – 2z-¹) 5 3² (1-z-¹) (1 - 2z-¹)" 중시지를 플시리스를 1 <11 <2 <리 <2

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