题目内容:
A.y=Acos[2πv(t+to)+π/2]
B.y=Acos[2πv(t-to)+π/2]
C.y=Acos[2πv(t-to)-π/2]
D.y=Acos[2πv(t+to)-π/2]
参考答案:【答案仅供学习,请勿对照自行用药等】
答案解析:
A.y=Acos[2πv(t+to)+π/2]
B.y=Acos[2πv(t-to)+π/2]
C.y=Acos[2πv(t-to)-π/2]
D.y=Acos[2πv(t+to)-π/2]