sin2x+根号3乘c0s2x+1化成y=Asin(wx+?)的形式.怎么化?有公式么?最好讲-下概念...
问题描述：
sin2x+根号3乘c0s2x+1化成y=Asin(wx+?)的形式.怎么化?有公式么?最好讲-下概念...
sin2x+根号3乘c0s2x+1化成y=Asin(wx+?)的形式.怎么化?有公式么?
最好讲-下概念,有个字打不出来用?代替了…
答
sin2x+√3cos2x+1
=2(1/2sin2x+√3/2cos2x)+1
=2(cosπ/3sin2x+sinπ/3cos2x)+1
=2sin(2x+π/3)+1