f(x)=sin（2x-π/6),π/4≤x≤π/2,求f（x）的值域

f(x)=sin（2x-π/6),π/4≤x≤π/2,求f（x）的值域
f(x)=sin（2x-π/6),π/4≤x≤π/2,求f（x）的值域

f(x)=sin（2x-π/6),π/4≤x≤π/2,求f（x）的值域
π/4≤x≤π/2 π/2≤2x≤π π/3≤2x-π/6≤5π/6
f(x)=sin(2x-π/6)的域是[1/2,1]