函数f(x)=根号3sinx-cosx=2sin(x-π/6)为么
问题描述:
函数f(x)=根号3sinx-cosx=2sin(x-π/6)为么
答
f(x)=√3sinx-cosx
=2sin(x-π/6)
对过程?f(x)=√3sinx-cosx =2[(√3/2)sinx-(1/2)cosx] =2[cos(π/6)sinx-sin(π/6)cosx]=2sin(x-π/6)