函数y=sin(wx+φ )(w>0,-π/2

问题描述:

函数y=sin(wx+φ )(w>0,-π/2

由T=π,得w=2π/π=2
经y=sin[2(x+φ/2)]变换为y`=sin[2(x+π/6+φ/2)]
由y(0)=0,得:φ=kπ-π/3,k∈Z
且-π/2