化简函数f(x)=根号三倍的sin2x+cos2x
问题描述:
化简函数f(x)=根号三倍的sin2x+cos2x
答
=√3sin2x+cos2x
=2(sin2x* √3/2+cos2x* 1/2)
=2(sin2xcos30°+cos2xsin30°)
=2sin(2x+30°)