名校
1 . 已知函数
.
(1)求
的最小值;
(2)已知点
在曲线
上.
(i)求曲线
在点
处的切线方程(用
表示);
(ii)设点
,
,当
时,证明:过点
至少有一条直线与曲线
相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17656abebe660ef9c07cf534fd5b81e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25be20e3724274132cb83b16deaeecfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(i)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(ii)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8530bca5123179cfede86d03738495e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a35eafa945ad0a36bc9f5c9a2a4f07a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca82ab6e4e9d6174e1dbf468939b6e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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解题方法
2 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)求证:当
时,
;
(3)若
对
恒成立,求实数k的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdcd5708d98789edd544d7ae3e13684b.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efcdc1705a3f7a6241c42cab30d8d277.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342e9a6f6dfb90e2863ab537c3fd382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65b90083f9d7098d64f0433207b6009.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5094c2b476b8c9ace719202fdbbeb982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342e9a6f6dfb90e2863ab537c3fd382.png)
您最近一年使用:0次
2022-12-24更新
|
623次组卷
|
2卷引用:北京市第十五中学2023届高三上学期12月月考数学试题
名校
3 . 已知函数
,
.
(1)求函数
的最小值;
(2)求函数
的单调区间;
(3)求证:直线
不是曲线
的切线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5316c24082cc29a83d75efae82097053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803905ac8f35d5c8ee41f90472c8382d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
您最近一年使用:0次
22-23高三上·北京·期中
名校
4 . 已知函数
,
.
(1)当
时,求曲线
在点
处的切线方程;
(2)求函数
在区间
上的最小值;
(3)求证:“
”是“函数
在区间
上单调递增”的充分不必要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5a945dc25143acb627269838973e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7754cc9374c8193dadb6875fb8a3fefb.png)
(3)求证:“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1422e1561be02d6571ef98b424f05f0d.png)
您最近一年使用:0次
名校
解题方法
5 . 已知函数
,且
.
(1)求实数
的值,并求函数
的最大值和最小值;
(2)函数
,若对任意
,总存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d67f858371a244113eb6d18c8b331051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b5320a6f673d6c2e70a815adaf2440.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05822c9db80a25aac9f30abc4a23cd30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0496d81c441e6cfa9c26ff7e83746eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ae67abf7472261475250220905c97c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626f73fe4e46045a195a8c5e09ae6e9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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6 . 设函数
,其中
为实数.
(1)若
,求
的极值和单调区间;
(2)若
在
上有最小值,求
的取值范围;
(3)若
在
上是单调增函数,试求
的零点个数,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e1f51c9cb1877dba78d0f8a016bb73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf7b339246d52b29603d33c152f44de1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7334919736e5ed881f691e4ca738b4ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
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7 . 信息熵是信息论中的一个重要概念.设随机变量X所有可能的取值为1,2,…,n,且P(X=i)=pi>0(i=1,2,…,n),
,定义X的信息熵H(X)=
.给出下面四个结论:
①若n=1,则H(X)=0;
②若n=2,则当
时,H(x)取得最小值;
③若
,则H(X)随着n的增大而增大;
④若n=10,随机变量Y所有可能的取值为1,2,…,5,且P(Y=j)=pj+p11-j(j=1,2,…,5),则H(X)>H(Y).
其中,正确结论的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c94a17b49550283be4ec1a348c8534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e3bc792b5bc5f4716039e6892116e1.png)
①若n=1,则H(X)=0;
②若n=2,则当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e5f84b0617cbfa27da74b62ef8aae4c.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4ae1d445a2813cc5dbe0e96fc54f8c.png)
④若n=10,随机变量Y所有可能的取值为1,2,…,5,且P(Y=j)=pj+p11-j(j=1,2,…,5),则H(X)>H(Y).
其中,正确结论的个数是( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
名校
8 . 已知函数
,曲线
在
处的切线方程为
.
(1)求
的值;
(2)函数
在区间
上存在零点,求
的值;
(3)记函数
,设
(
)是函数
的两个极值点,若
,且
恒成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc22636fb0134cee0dd53a6ece79e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2bb6cfb3dd9b503d44ca3d636cad371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f450f37b048eed671d6e070d9a4d4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1dafa6cf5b9002d734b287e7983ee7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce1147ee4abf63924bee34303cf2d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2022-08-06更新
|
1432次组卷
|
9卷引用:北京市第八十中学2023届高三上学期开学考试数学试题
北京市第八十中学2023届高三上学期开学考试数学试题(已下线)2022年高考天津数学高考真题变式题13-15题(已下线)2022年高考天津数学高考真题变式题19-20题(已下线)专题10 导数及其应用难点突破2-利用导数解决零点、交点问题-2江苏省苏州中学2021-2022学年高二下学期期末数学试题江苏省南京师范大学苏州实验学校2022-2023学年高二日新班上学期9月月考数学试题(已下线)第5章 导数及其应用(A卷·知识通关练)(2)江苏省无锡市锡东高级中学2023-2024学年高二下学期期中考试数学试题山东省泰安第一中学2023-2024学年高二下学期5月月考数学试题
名校
9 . 已知函数
(
).
(1)当
时,
①求曲线
在点
处的切线方程;
②求函数
的最小值;
(2)设
,证明:当
时,曲线
与
至多有一个交点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b48b317305f72b1fd9c787281eae56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b624d88827e92e12bc0a8f1067cbe72.png)
①求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2072fe5a3f23ac574dde4f0abb2fd5e9.png)
②求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dbb9749d16cddaef247201f13c2bef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f5f7a36e251bbc424ccc127ebb2881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
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名校
10 . 已知函数
.
(1)若
在
处的切线与
轴平行,求
的值;
(2)
有两个极值点
,比较
与
的大小;
(3)若
在
上的最大值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaeb53a3b2e25b000df5361fae76a28.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db8805cda07838d256165991623acca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8cb4f458128ee80997a0f32209529d3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b312dd9c008c7cb201f7b59696d571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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