两分振动方程为,x1=5cos(πt+π/2),x2=2cos(πt-π/2),则合振动方程为()
两分振动方程为,x1=5cos(πt+π/2),x2=2cos(πt-π/2),则合振动方程为()
A.x=3cos(πt-π/2)
B.x=3cos(πt+π/2)
C.x=7cos(πt+π/2)
D.x=7cos(πt-π/2)
正确答案:A
Tag:方程
时间:2023-01-06 15:30:40