f(x)=sinx+根号3cosx的值域是?
问题描述:
f(x)=sinx+根号3cosx的值域是?
答
f(x)=2(1/2*sinx+√3/2*cosx)
=2(sinxcosπ/3+cosxsinπ/3)
=2sin(x+π/3)
-1