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若函数f(x)=x2+bx+c的对称轴方程为x=2,则( ) A.f(2)<f(...
若函数f(x)=x2+bx+c的对称轴方程为x=2,则( )
A.f(2)<f(1)<f(4)
B.f(1)<f(2)<f(4)
C.f(2)<f(4)<f(1)
D.f(4)<f(2)<f(1)
考点分析:
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