已知ω>0,0已知ω>0,0
已知ω>0,0,直线X=π/4和x=5π/4则T/2=5π/4-π/4得到T=2π所以w=1f(x)=sin(x+φ)x=π/4是对称轴 故π/4+φ=kπ+π/2(k是整数)而0