函数f(x)=sin(2x+л/4) (0≤x≤л/2)的单调增区间是?

问题描述:

函数f(x)=sin(2x+л/4) (0≤x≤л/2)的单调增区间是?

sinx单增区间[2kπ-π/2,2kπ+π/2]
2kπ-π/2kπ-3π/8≤x≤kπ+π/8
0≤x≤π/2
答案:0≤x≤π/8