名校
1 . 已知函数
.
(1)若
,证明:
;
(2)讨论
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92cb70ebc1443289114cac655ec2a55.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
的定义域为
.
(1)当
时,证明:
;
(2)当
时,若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee21f3490af85d1de66a668c1dd0cc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b029e85e686623cdef977b2cb1f207a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-04-06更新
|
146次组卷
|
6卷引用:青海省海南州高级中学、贵德中学2020-2021学年高二下学期期中联考数学(理)试题
3 . 已知函数
.
(1)当
时,证明:函数
单调递增;
(2)当
时,令
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493dee765664a2847e81df36d46a4e08.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8bdb49d4cb59b0f4185dd8eb821194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faaec807c194e8448145d7b898a9ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-07-25更新
|
608次组卷
|
3卷引用:青海省西宁市大通回族土族自治县2020-2021学年高三上学期第一轮复习期末联考数学(文)试题