函数f(x)=4sin(x-π/3)cosx+√3,求周期
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 15:57:53
x){ھ
i&řy5+u2y̷I*'E~
VKU @r )] U@
mCM`IBF, 9.Pcd{F 1i kR
函数f(x)=4sin(x-π/3)cosx+√3,求周期
函数f(x)=4sin(x-π/3)cosx+√3,求周期
函数f(x)=4sin(x-π/3)cosx+√3,求周期
f(x)=4sin(x-π/3)cosx+√3
=4sinxcosπ/3cosx-4cosxsinπ/3cosx+√3
=sin2x-√3(cos2x+1)+√3
=sin2x-√3cos2x
=2(1/2sin2x-√3/2cos2x)
=2sin(2x-π/3)
T=2π/2=π