已知f(x)=2√3 sinxcosx+(cos^2)x-(sin^2)x 马上要!
问题描述:
已知f(x)=2√3 sinxcosx+(cos^2)x-(sin^2)x 马上要!
已知f(x)=2√3 sinxcosx+(cos^2)x-(sin^2)x
1.求函数的最小正周期
答
f(x)=2√3 sinxcosx+(cos^2)x-(sin^2)x
=√3sin2x+cos2x
=2(√3/2sin2x+1/2cos2x)
=2sin(2x+π/6)
所以最小正周期T=2π/2=π