高中数学代数与函数一其他练习题133
题目内容

若不等式 http://picflow.koolearn.com/upload/papers/20140824/20140824044847990730.png对于一切非零实数 http://picflow.koolearn.com/upload/papers/20140824/20140824044848006266.png均成立,则实数 http://picflow.koolearn.com/upload/papers/20140824/20140824044848021283.png的取值范围是

2021-07-20

A.http://picflow.koolearn.com/upload/papers/20140824/20140824044848037460.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824044848037419.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824044848053442.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824044848068439.png

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