求函数单调区间
来源：学生作业帮助网 编辑：六六作业网 时间：2024/05/09 12:05:34
求函数单调区间求函数单调区间 求函数单调区间f(x)=sin(2x-π/4)+cos(2x+3π/4)=sin(2x-π/4)+cos(2x-π/4+π)=sin(2x-π/4)-cos(2
求函数单调区间
求函数单调区间
求函数单调区间
f(x)=sin(2x-π/4)+cos(2x+3π/4)
=sin(2x-π/4)+cos(2x-π/4+π)
=sin(2x-π/4)-cos(2x-π/4)
=√2sin(2x-π/4-π/4)
=√2sin(2x-π/2)
=-√2sin2x
π/2+2kπ