1 . 设函数
.
(1)讨论
的单调性;
(2)若
存在两个极值点
,且
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd1ededebcdb22583a375f0d56b643e.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc4418f85427dc88d16764eebadf484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e1fc37b39c582c38f3c9058e56c5aa.png)
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2018-08-03更新
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614次组卷
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2卷引用:【全国市级联考】河北省张家口市2017-2018学年高二下学期期末考试数学(理)试题