y=sin（x+π/6）+cosx=sinxcos(π/6)+cosxsin(π/6)+cosx=(√3/2)*sinx+(3/2)cosx=√3*[(1/2)*sinx+(√3/2)cosx]=√3*sin(x+π/3)因为0≤x≤π,即π/3≤x+π/3≤4π/3所以-√3/2≤s...