已知函数f(x)=sin(wx+π/4)(x属于R,w大于0)的最小正周期为π将y=f(x)的图像向左平移绝对值fai接着：个单位长度,所得图像关于y轴对称,则fai的一个值是什么?神速+非常详细!

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