(1)f(x)=√3sin2x-cos2x+2=2sin(2x-π/6)+2所以f(x)的值域为[0,4],所以m的取值范围为[1,+∞)
已知函数f(x)=4sin^2x+2cos(2x-π/3).(1)若存在x0∈[π/4,2π/3],使mf(x0)-4=
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