函数sin(5π/6-x/2)cos(π/6+x/2)的单调递减区间为

问题描述:

函数sin(5π/6-x/2)cos(π/6+x/2)的单调递减区间为

F(X)=sin(X/2+π/6)COS(X/2+π/6)
=SIN(X+π/3)
增区间为2kπ-π/2