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1 . 已知函数
,M为不等式
的解集.
(1)求M;
(2)证明:当
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d235c1b39b83168b130bd4724e53a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d24227741bf427e6bd73490baf3c3d6.png)
(1)求M;
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2b85186925658e66d8541a5645269e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efbf3eb3221ab3d3ace3044c69c7ce5.png)
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2020-02-09更新
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3卷引用:重庆市第八中学2018-2019学年高二下学期期末考试数学(理)试题