問題詳情

41•如【圖9】波形所示，下列函數式何者正確？
(A)f ⑴=2(t - l)[u(t -1) - u(t - 2)]
(B)f⑴=2t[u(t -1) - u(t - 2)]
(C)f(t) = 2(1 - t)[u(t -1) - u(t - 2)]
(D)f ⑴=(2 - t)[u(t- 1) - u(t -2)]

參考答案

答案：A
難度：困難0.384615
統計：A(5),B(4),C(3),D(1),E(0)