名校
1 . 已知函数
,
.
(1)求函数
的单调区间;
(2)当
时,
恒成立,求实数
的取值范围;
(3)当
时,求证:当
时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6438fd870167e19e720adcc7c7d7bade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a262ee93e05410c37f1f91b6764f93b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bc1807f5f5784e75c4e5e6df17f3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8e4b5cdc213bd6d1d8b617f038234c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302337058242c7b78e3eb4ac7210b7ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c6cf9152e0d02b83eb22b01722d29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c92795a43edb3b8cfcbaef3790b333.png)
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2018-05-30更新
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3卷引用:【全国百强校】湖南省岳阳市第一中学2019届高三上学期第三次质检(期中)数学(理)试题