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已知函数f(x)=lnx+http://picflow.koolearn.com/upload/papers/g02/20120505/20120505114306266348.png,其中a为大于零的常数,若函数f(x)在区间[1,+∞)内单递增,则a的取值范围是

发布时间:2021-07-15

A.(-∞,1]

B.(-∞,-1]

C.[1,+∞)

D.[-1,+∞)

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