29.下列何者是線性系統?(y(t)為輸出,u(t)為輸入,t為時間,y’表y(t)對時間之導數)
(A)y’=2y(t)+3u(t)
(B)y’=2y(t)u(t)
(C)y’=u(t)+(y(t))2
(D)y’=u(t)/y(t)
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統計: A(37), B(13), C(14), D(12), E(0) #1193898
統計: A(37), B(13), C(14), D(12), E(0) #1193898