y=sinx-cos(x+六分之派)值域

问题描述:

y=sinx-cos(x+六分之派)值域

y=sinx-cos(x+π/6)
=sinx-(cosx*√3/2-sinX*1/2)
=3/2*sinx-√3/2*cosx
=√3sin(x-π/6)
值域为[-√3,√3]