已知函数f(x)=2√3sinxcosx+2cosx^2-1

2024-11-19 17:48:17
推荐回答(3个)
回答1:

解f(x)=2√3sinxcosx+2cosx^2-1
=√3*2sinxcosx+(2cosx^2-1)
=√3sin2x+cos2x
=2(√3/2sin2x+1/2cos2x)
=2sin(2x+π/6)
T=2π/2=π

回答2:

答案如下:f(x)=2√3sinxcosx+2cosx^2-1=√3*2sinxcosx+(2cosx^2-1=√3sin2x+cos2x
=2(√3/2sin2x+1/2cos2x)=2sin(2x+π/6) T=2π/2=π

回答3:

f(x)=2√3sinxcosx+2cosx^2-1=√3*2sinxcosx+(2cosx^2-1)=√3sin2x+cos2x=2(√3/2sin2x+1/2cos2x)=2sin(2x+π/6)
T=2π/2=π