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已知函数 http://picflow.koolearn.com/upload/papers/20140824/20140824023752472867.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023752472323.png处有极值 http://picflow.koolearn.com/upload/papers/20140824/20140824023752487298.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824023752503460.png等于(      )

发布时间:2021-07-15

A.http://picflow.koolearn.com/upload/papers/20140824/20140824023752518222.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023752534314.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824023752518222.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824023752565290.png或18

D.http://picflow.koolearn.com/upload/papers/20140824/20140824023752581346.png

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