设函数f x =2cosxsin(x+π/6)+2sinxcos(x+
问题描述：
设函数f x =2cosxsin(x+π/6)+2sinxcos(x+
设函数f x =2cosxsin(x+π/6)+2sinxcos(x +π/6)(1)x属于[0.π/2]时函数值域
答
f(x)=2cosxsin(x+π/6)＋2sinxcos(x+π/6)
= 2sin(2x+π/6)
x∈[0,π/2]
f(x)∈[ -1,2]