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已知函数 http://picflow.koolearn.com/upload/papers/20140824/20140824045051979805.png在区间[-1,2]上是减函数,那么b+c(    )

发布时间:2021-07-16

A.有最大值http://picflow.koolearn.com/upload/papers/20140824/20140824045051979401.png

B.有最大值-http://picflow.koolearn.com/upload/papers/20140824/20140824045051979401.png

C.有最小值http://picflow.koolearn.com/upload/papers/20140824/20140824045051979401.png

D.有最小值-http://picflow.koolearn.com/upload/papers/20140824/20140824045051979401.png

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