34.下列哪一個行進波的波速最快？ (A)y(x,t) = A cos(x − t) (B)y(x,t) = A cos(x + 2t) (C)y(x,t) = A cos(x + t) (D)y(x

問題詳情

34.下列哪一個行進波的波速最快？
(A)y(x,t) = A cos(x − t)
(B)y(x,t) = A cos(x + 2t)
(C)y(x,t) = A cos(x + t)
(D)y(x,t) = A cos(2x − 5t)

答案：D

統計：A:0,B:0,C:0,D:0,E:0

難度：計算中