函数f(x)=根号3sin2x-cos2x可化简为
问题描述:
函数f(x)=根号3sin2x-cos2x可化简为
答
f(x)=√3sin2x-cos2x
=2(√3/2sin2x-1/2cos2x)
=2(cos(π/6)sin2x-sin(π/6)cos2x)
=2sin(2x-π/6)