解题方法
1 . 已知函数
.
(1)当
时,求
的单调区间与极值;
(2)若
,证明:当
,且
时,
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5594f2712521f9910abf07039850b5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec5792dbdc5ee1677ecd53435552272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e32125207addc3fdb92ceb0ec80ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a620b284ae80049376c7a7c9afab1f62.png)
您最近一年使用:0次
2023-12-22更新
|
751次组卷
|
3卷引用:山西省部分学校2024届高三上学期12月联考数学试题
名校
解题方法
2 . 已知函数
.
(1)若
,求函数
的极值;
(2)当
时,若对
,
恒成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd04001d68fb2c7bce31c220f98a8bfd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f832d9cca2d5c9d76d38374e2a258d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61451cc73883c93bc9ab3ab00cae2d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f15802a8683020919d225220fcc8681.png)
您最近一年使用:0次
2023-03-18更新
|
413次组卷
|
4卷引用:山西省忻州市名校2022-2023学年高二下学期第一次月考数学试题
解题方法
3 . 已知函数
,
.
(1)求
的极值;
(2)令
,若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e536d094cddcd0c8ac4cd4c01f41c136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824555e1cafdc9d95a203c5f1f49e735.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4633de9335d15d7685bdecb007a3678c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a74b52ecccbf8c007dd60560ea1861.png)
您最近一年使用:0次
2023-02-16更新
|
390次组卷
|
3卷引用:山西省运城市2022-2023学年高二上学期期末数学试题
解题方法
4 . 已知函数
.
(1)求
的单调区间与极值;
(2)若
对
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00e3f7c014bef2f4d195067fa865c02.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7022b1599727df97c9ed4ef8b9ee91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6330540758a21f46fc7a6d1e6328d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
5 . 已知函数
.
(1)讨论函数
的极值;
(2)记关于
的方程
的两根分别为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a9b885a5454b28d7c99b3437908ac9.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)记关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62dfc39a13b4d6b92cbe1ddf2078bdb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94da0cd42b1a1949427b5ca5dd80ae5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796859f33c3647f1128e75f311b26af9.png)
您最近一年使用:0次
2020-04-13更新
|
449次组卷
|
2卷引用:山西省运城市芮城中学2022-2023学年高三上学期数学期末模拟试题
解题方法
6 . 已知
,函数
.
(1)证明:
有两个极值点;
(2)若
是函数
的两个极值点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65e5dc0d47eb13d05739fec70fe8fe3.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce67e6299dc2b84c348c67e812c8f8d3.png)
您最近一年使用:0次
解题方法
7 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be81134385e323490af87dfc2a29193e.png)
.
(1)求函数
的极值;
(2)当
时,若存在实数
,
使得不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7c7debdf9905b44ff41d808a09d1ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be81134385e323490af87dfc2a29193e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a1a5f2533b8ea54b7022383f875666.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a725d126ea46b61280a23722f49e71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
8 . 已知函数
.
(1)求曲线
在点
处的切线方程和函数
的极值;
(2)若对任意的
,都有
成立,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10681ce4d8d4149898debf5dac7ac826.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c3d56ad65950f7e9353f1a63b0302c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ff3dc2c8ff8c85033f84dee00b4bb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次