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…

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 22:47:43

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…
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…

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…
sin2x+√3cos2x+1
=2(1/2sin2x+√3/2cos2x)+1
=2(cosπ/3sin2x+sinπ/3cos2x)+1
=2sin(2x+π/3)+1

asinx+bcosx
==√(a^2+b^2)(sinxcosω+cosxsinω) (令sinω=b/√a^2+b^2,cosω=a/√a^2+b^2)
=√(a^2+b^2)sin(x+ω)
sin2x+√3cos2x+1
=2(1/2sin2x+√3/2cos2x)+1 ∵√(1+√3^2)=2
=2(cosπ/3sin2x+sinπ/3cos2x)+1
=2sin(2x+π/3)+1