1 . 已知函数
,
.
(1)
时,求曲线
在
处的切线方程;
(2)
时,求不等式
在区间
上的解集;
(3)是否存在
,使得
在
内有两个零点.若存在,求出
的一个取值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1dd98130947c6928b944ef9bf7b33f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec25b105130d71d3d529524671b6218.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2b4dfaed64a8a67a4d8a79c45bc43e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083479b94380e8d659eff92d10a1989d.png)
(3)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083479b94380e8d659eff92d10a1989d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知函数
,其中e是自然对数的底数,
.
(1)当
时,求不等式
的解集;
(2)当
时,求使方程
在
上有解的整数k的所有取值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf549ee34fe5aad7267b8ca3d97097b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7343e8f9118952329c5c1072caa9b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733842be1a330aeaba21df805feb438b.png)
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3 . 已知实数
,函数
.
(1)当
时,求不等式
的解集;
(2)当
时,求
在区间
上的值域;
(3)求实数
的范围,使得对于区间
上任意三个实数
,都存在以
为边长的三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce5431edbf9bd238dfe9a2e33848f30.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c35609e753bc89706364a7b7655178.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497199a00f177af4c593e0e715be97f1.png)
(3)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d8ac7cb907ec1ca9b5caee0c3e4ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c5fe8a9ad42e52a8a40242865c6752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb5683c09a9ca563eb95de363974ef5.png)
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名校
解题方法
4 . 已知函数
.
(1)
在定义域内单调递减,求
的范围;
(2)讨论函数
在定义域内的极值点的个数;
(3)若函数
在
处取得极值,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7c6dbd23c3a97ca565293fa527a43c.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c2d34cb1ea0cf34812cd7bf01a37b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
名校
5 . 已知函数
,若函数
有 3 个极值点
,则实数
的取 值范围是_______ ; 若
,则实数
的取值范围是 _____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9180806e001b88049b9441af6ad1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcee20976de0e0e8c1ccd7a951674691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9facbec77e33a43dc5cec58eea852d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
6 . 已知函数
,
,
.
(1)若函数
在
上单调递增,求
的取值范围;
(2)若关于
的方程
有两个实根
,
(i)求
的范围;
(ii)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff6838d84b68c6f0d3b93b196d9b08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4784338464ebd7b72876659bcb2df179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/020d756192f4dc7939f3b73891ced2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c34a0d539a1a149edfd5b6c2e3dfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ed1edfb1823ff324796448f20bd690.png)
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7 . 已知函数
.
(1)讨论函数
的单调性;
(2)若函数
有
个零点,求
的范围
(3)若函数
在
处取得极值,且存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf3a2ca5682a08d4007afef89257035.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6e90d9742228fd7b825c060615ee5d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2024-05-04更新
|
487次组卷
|
2卷引用:重庆市第十一中学校教育集团2023-2024学年高二下学期期中考试数学试题
名校
解题方法
8 . 关于函数
,
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a903745cd2cb536443d07579b606ece5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681d6d27b23b1c41834d7516122f73f9.png)
A.若过点![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若函数![]() ![]() ![]() |
您最近一年使用:0次
2024-02-27更新
|
1165次组卷
|
5卷引用:湖南省岳阳市平江县颐华高级中学2023-2024学年高二下学期入学考试数学试题
名校
解题方法
9 . 已知
.
(1)若
在
恒成立,求a的范围;
(2)若
有两个极值点s,t,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7da9eb2cdd67177dc3b0f615c7c7a19.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad491390dd1b066b3e819e11ef1ac4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03db4ea1dcb63b22cf4e917df5db581e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48e85d79f939f2a62255794041b3722.png)
您最近一年使用:0次
2024-02-27更新
|
932次组卷
|
4卷引用:山东省部分名校2023-2024学年高三下学期2月大联考数学试题
10 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f81694c250c0107d608508c094f27f.png)
(1)当函数
有3个零点,求实数
的取值范围;
(2)当
取条件(1)下的取值时,设函数
有3个零点
,
,
,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f81694c250c0107d608508c094f27f.png)
(1)当函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a42945a6ff4452dfbe550e0f28c82f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcefa1eadaa807e3fe6c61a2f8d2dea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5646305daf3f3a5c135d45dbe51aff69.png)
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