名校
1 . 已知函数
.
(Ⅰ)当
时,讨论函数
的单调性;
(Ⅱ)当
,
时,
,其中
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd19e91c01516ee039465bedcd41dadc.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07630bbde4cfcfabfb863995944d38fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4351690859edb6d411f526dfab12cd6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecaacf913bac4b0b2b6625994fca3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0648c84fe83a027030a3fe7848f0518a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b5b9d0331d4d01d8cd84bcc275324d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d188e9521b6a58cd0cbb2e1e0e37e299.png)
您最近一年使用:0次
2019-04-24更新
|
665次组卷
|
5卷引用:【市级联考】河南省濮阳市2019届高三第二次模拟考试数学(理)试题
2 . (1)已知
,用分析法证明:
;
(2)已知
,
且
,用反证法证明:
都大于零.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c98401885743a500968884098943bb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dab79c2f92fd3e6652b5dab97a40fe4.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e7ef804eeb23618fbf91ead47587f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caefa8167a011d549cd51c614f7d7500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
您最近一年使用:0次
2017-10-13更新
|
805次组卷
|
2卷引用:广东省中山市第一中学2016-2017学年高二下学期第二次统测数学(理)试题