名校
1 . 设函数
(
是自然对数的底数).
(1)判断
的单调性;
(2)当
在
上恒成立时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74692e58ad5a818b88cf1f060dbf82fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2018-05-13更新
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4卷引用:山西省大同市煤矿第四中学2018-2019学年高二下学期3月阶段性测试数学(理)试题