已知函数f(x)=sin(wx+π/4)(x属于R,w0)的最小正周期为π,为了得到函数g(x)=coswx的图像,只要将y=f（x）的图像怎么变化呢?为什么不是向右平移π/4个单位长度

已知函数f(x)=sin(wx+φ)(w 已知函数f(x)=sin(wx+φ)(w 已知函数f(x)=sin(wx+φ)(w 已知函数f(X)=sin(Wx+&)(W>0,0 [非常急]已知函数f(x)=根号3sin(wx+φ)-cos(wx+φ)(0 已知函数f(x)=根号3sin(wx+φ)-cos(wx+φ)(0 已知函数f(x)=√3sin(wx+φ)-cos(wx+φ)(0 已知函数f(x)=根号3sin(wx+a)-cos(wx+a)(0 已知函数f(x)=根号3sin(wx+φ)-cos(wx+φ)(0 已知函数f(x)=√3 sin( wx+φ)-cos(wx+φ) (0 已知函数f(x)=根号3sin(wx+fai)-cos(wx+fai)(0 已知函数f(x)=√3 sin( wx+φ)-cos(wx+φ) (0 已知函数f(x)=√3sin(wx+φ)-cos(wx+φ)(0 已知函数f(x)=2sin(wx+φ),x属于R,w>0,-π 设函数f(x)=sin(wx+t)(-π/2 设函数f(x)=sin(wx+t)(-π/2 已知函数f(x)=2sin(wx+a)(a>0,-π/2 已知函数f(x)=sin(wx+a)(a>0,-π/2