31 若 為 之 z-轉換(z-transform),其計算式為
,則z-1 X(z)的反 z-轉換(inverse z-transform)為何?
(A) 
(B) x(n −1 )
(C)x(n).cos(n)
(D)x2(n)
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統計: A(16), B(17), C(2), D(8), E(0) #1033930
統計: A(16), B(17), C(2), D(8), E(0) #1033930