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若x,y∈R+且http://picflow.koolearn.com/upload/papers/g02/20110523/201105231509000841328.gif恒成立,则a的最小值是

发布时间:2021-07-21

A.1

B.http://picflow.koolearn.com/upload/papers/g02/20110523/20110523150900100919.gif

C.http://picflow.koolearn.com/upload/papers/g02/20110523/20110523150900115919.gif

D.1+http://picflow.koolearn.com/upload/papers/g02/20110523/20110523150900147975.gif

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