1 . 已知
,
.
(1)记
,讨论
的单调区间;
(2)记
,若
有两个零点a,b,且
.
请在①②中选择一个完成.
①求证:
;
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd58e16598e6bdb3c35194af69951a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b613d0bfe3fc354b79e35bd80e7392f8.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71607511fdd4faa9e832345ceb2a817d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25dda3572b334c96eb51be1cf438f41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92860378096f519a8fb276d07dbfabce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
请在①②中选择一个完成.
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc69ff68c1dd962c9a3bd835490339c4.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7006713e07f57f8caa25e6796a32a3.png)
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2022-05-20更新
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462次组卷
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2卷引用:海南省海口市秀英区海口嘉勋高级中学2024届高三上学期开学考试数学试题