f(x)=sin(2x+θ) 其中0
问题描述：
f(x)=sin(2x+θ) 其中0
答
f'(x)=2cos(2x+θ)所以F(x)=sin(2x+θ)+cos(2x+θ)=√2sin(2x+θ+π/4)要使F(x)为奇函数,则F(-x)=-F(x)sin(-2x+θ+π/4)=sin(-2x-θ-π/4)-2x+θ+π/4=-2x-θ-π/4+2kπ θ=kπ-π/4或-2x+θ+π/4=π+2x+θ+π/4+2k...感谢您的帮助最开始应该是f'(x)=cos(2x+θ)