不对,
因为f(x)=cos2x-2√3sinxcosx=cos2x-√3sin2x=2[sinπ/6cos2x-cosπ/6sin2x]=2sin(π/6-2x)
左移5π/12,f(x)=2sin【π/6-2(x+5π/12)】=2sin(-2x-2π/3)
与y=2sin2x图像不重合
不对,
因为f(x)=cos2x-2√3sinxcosx=cos2x-√3sin2x=2[sinπ/6cos2x-cosπ/6sin2x]=2sin(π/6-2x)
左移5π/12,f(x)=2sin【π/6-2(x+5π/12)】=2sin(-2x-2π/3)
与y=2sin2x图像不重合