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已知函数f(x)=4x2-mx+5在区间[-2,+∞)上是增函数,则f(1)的范...
已知函数f(x)=4x2-mx+5在区间[-2,+∞)上是增函数,则f(1)的范围是( )
A.f(1)≥25
B.f(1)=25
C.f(1)≤25
D.f(1)>25
考点分析:
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