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已知函数f(x)=-x2+4x-3,x∈[0,m]且f(x)max=f(m),则...
已知函数f(x)=-x2+4x-3,x∈[0,m]且f(x)max=f(m),则m的取值范围( )
A.m≥2
B.0<m≤2
C.m≤2
D.0≤m≤2
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