Question

y＝sinx,x∈[ (­π)÷3 ,(­2×π)÷3 ]

Answer 1

y＝sinx,x∈[ ­π/3 ,2π/3 ]

单调增区间( ­π/3 ,π/2)

单调减区间( ­π/2 ,2 π/3)

x= π/2时最大值1

x=(π/3 或2π/3时最小值✔3/2

值域【✔3/2,1】