解题方法
1 . 已知函数
,
.
(1)求证:当
,
;
(2)若
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff6838d84b68c6f0d3b93b196d9b08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e47704aed5d83519bf1c1a8a14e0289f.png)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80fcb77b3bdf39c6c3b6081c8663a6aa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f7d258d3e54fd51580674a824a1a9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2 . 已知函数
,若函数
在
处取得极值.
(1)求实数
的值;
(2)若函数
有三个不同的零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a96261365d9c382afd7449bf0da3672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a526208da27d53bae502442a92285b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
3 . 已知函数
.
(1)当
时,
(I)求
处的切线方程;
(II)判断
的单调性,并给出证明;
(2)若
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306c4fd852595a656e37eb90a7b7d8c0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
(I)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1687e74281db4c12e4a826152f5dd249.png)
(II)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-07-16更新
|
636次组卷
|
3卷引用:贵州省铜仁市2022-2023学年高二下学期7月期末质量监测试数学试题
名校
4 . 已知函数
.
(1)讨论函数
的单调性;
(2)当
时,设
,求证:函数
存在极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5d095a3c0c120d3d702e104b18f780.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e56a5f4ba4f6ee71e597cf24faae2a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ec9445754bfeab7172aa956c2dd7cd.png)
您最近一年使用:0次
2023-07-16更新
|
511次组卷
|
3卷引用:贵州省黔东南州2022-2023学年高二下学期末文化水平测试数学试题
5 . 已知函数,
(1)证明 :
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041e1d5a68bc99542da858e2268d973f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00cbc984a3eef14c2273664db0679ada.png)
您最近一年使用:0次
6 . 已知函数
.
(1)讨论
在
上的单调性;
(2)若对于任意
,若函数
恒成立,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66134e2ddbd44bfab7b0422f282b5359.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55cfcbb5c5950e18a8452b38bb17036.png)
(2)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8291ca77106b0bcd3de09a4b9e63504.png)
您最近一年使用:0次
2023-05-16更新
|
1084次组卷
|
5卷引用:贵州省黔西南州金成实验学校2022-2023学年高二下学期期末质量检测数学试题
贵州省黔西南州金成实验学校2022-2023学年高二下学期期末质量检测数学试题河北省唐山市路北区2024届高三上学期期末模拟数学试题宁夏银川一中、昆明一中2023届高三联合二模考试数学(文)试题(已下线)第二章 函数的概念与性质 第二节 函数的单调性与最值(B素养提升卷)(已下线)重难点突破07 不等式恒成立问题(十大题型)-1
7 . 已知函数
在
(
为自然对数的底数)时取得极值,且有两个零点
,
.
(1)求实数
的值,以及实数
的取值范围;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975d2e7c564c1ec64d6fc5cee3bcf26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187c21027ff08411931d32c530b64fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4900c67f4b57fa430c4bd863f8e896.png)
您最近一年使用:0次
解题方法
8 . 已知函数
.
(1)求函数
的零点和极值;
(2)若对任意
,都有
成立,求实数a的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10681ce4d8d4149898debf5dac7ac826.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c3d56ad65950f7e9353f1a63b0302c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08afa0947a68c3f52cc20158bedcb1ef.png)
您最近一年使用:0次
9 . 已知函数
.
(1)讨论
的单调性;
(2)若
,证明:对于任意
,
恒成立.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c207efd83d75c1f69237d97616c726.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f184ef9e0d57554e95f369c9d4bbfea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c164755dc2d7cff80fb4c9cffc9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8ef34a025b672da960adc1d54adcd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b7e46d838bf6cf52979d5976d9c8f6.png)
您最近一年使用:0次
2023-01-19更新
|
264次组卷
|
2卷引用:贵州省黔东南州2023届高三上学期复习统一检测(期末)数学(文)试题
10 . 已知函数
.
(1)讨论函数的单调性及极值,并判断方程
的实根个数;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec4fac2691ded9b3187116e97d82e5b.png)
(1)讨论函数的单调性及极值,并判断方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc313952a96b3754600fa57d5f7d8fa7.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb7f286aeebbdc029989cc66250a10a.png)
您最近一年使用:0次