高中数学代数与函数一其他练习题140
题目内容

http://picflow.koolearn.com/upload/papers/20140824/20140824023532680447.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023532695442.png是定义在同一区间 http://picflow.koolearn.com/upload/papers/20140824/20140824023532711432.png上的两个函数,若对任意的 http://picflow.koolearn.com/upload/papers/20140824/20140824023532727557.png,都有 http://picflow.koolearn.com/upload/papers/20140824/20140824023532727695.png,则称 http://picflow.koolearn.com/upload/papers/20140824/20140824023532680447.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023532695442.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023532711432.png上 是“密切函数”, http://picflow.koolearn.com/upload/papers/20140824/20140824023532711432.png称为“密切区间”,设 http://picflow.koolearn.com/upload/papers/20140824/20140824023532805719.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023532820626.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023532711432.png上是“密切函数”,则它的“密切区间”可以是(    )       

2021-07-21

A.http://picflow.koolearn.com/upload/papers/20140824/20140824023532851360.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824023532867420.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824023532867418.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824023532883428.png

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