名校
1 . 已知函数
.
(1)当
时,求函数
过点
的切线方程;
(2)若
,求证:函数
只有一个零点
,且
;
(3)当
时,记函数
的零点为
,若对任意
且
,都有
,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc0db6b00598228e879ccec7344552d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9911764f5df77f600e42785fe221e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a71bb8a80c75bcc1480263bc7ea3479.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b14cee721d531eb36d8b2b5edc546f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0f86739f8fbd62469cd515f6a45660.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68e51bd90e83cc3580baf78c2e378701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771afbd69b8312b55533003ec79f836d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
2 . 已知
.
(1)若关于x的方程
有解,求实数a的最小值;
(2)证明不等式
;
(3)类比(2)中不等式的证明方法,尝试证明:
(
,e为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7275d5d8dc96e8f717905b3b829917.png)
(1)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
(2)证明不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d982d6f54cadefc3f408fa92b359c349.png)
(3)类比(2)中不等式的证明方法,尝试证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9edd67fbb4b725035694620f7238ba5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
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2023-03-03更新
|
656次组卷
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2卷引用:上海市交通大学附属中学2023届高三下学期开学考试数学试题
解题方法
3 . 已知函数
,
.
(1)求
的单调区间与最值;
(2)若存在
,使得不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8a40dc05978ed607ffa4cefa5a9834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffa28c7f519c1c85c0a3cad23b2e6cb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c517950e7b40e1302d01665f1bbeba69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5316ebebbc80ef612fa606f92367125c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 已知定义域为R的函数
.当
时,若
是严格增函数,则称
是一个“
函数”.
(1)分别判断函数
、
是否为
函数;
(2)是否存在实数b,使得函数
,是
函数?若存在,求实数b的取值范围;否则,证明你的结论;
(3)已知
,其中
.证明:若
是R上的严格增函数,则对任意
,
都是
函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49439065fd967d4bd12365cf291b8d58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5707b77c17eca36e53457fdbc7912ae.png)
(1)分别判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f782e1eb033fdfa32dac8edfb8b57c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed131ad0448f2d2db9de2d4bac97b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a59df0f69cdcb8bbd1e7369d3b730ab6.png)
(2)是否存在实数b,使得函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb515ecf0312a464d8397afe595fc3f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7afbc0eb2f8879cbf27d3cb87068de3.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae036504cdbfb1f2e2bf9ed5fe2b2968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9dd3d2b2e6a989d52301fecc39eb74b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77339863130aaa1db8c2f851604b100b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b00438433719b82971f9fe309e04b5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7f440f809129f5f0fdb8a82877e619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef5f56f08fd326e87c0b607a5c89ba7.png)
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解题方法
5 . 设函数
(其中
是非零常数,
是自然对数的底),记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08d422069255315cda9300f042592280.png)
.
(1)求对任意实数
,都有
成立的最小整数
的值
;
(2)设函数
,若对任意
,
,
都存在极值点
,求证:点
在一定直线上,并求出该直线方程;
(3)是否存在正整数
和实数
,使
且对于任意
,
至多有一个极值点,若存在,求出所有满足条件的
和
,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33064244eb1291dd64d934b68f579de1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08d422069255315cda9300f042592280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e6e8340a691b540f1322c0aaa87d77.png)
(1)求对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/416d5334e06f6a69817aa4c95ef6b5a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e6e8340a691b540f1322c0aaa87d77.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e35c498029b87a5fa84a1047a5c2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6f0a55fa53bf5f8e6654897975bcf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b43f4c5b17fb428231e2958c36404b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787559fbe7c04f1e9aca26f3bdf26f71.png)
(3)是否存在正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8feaf51b5fdc0b7aad38b26f57825712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dded00a646338958d93e8a43bc157a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b4ceef651d43872a078d48092417d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
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2022-12-15更新
|
1014次组卷
|
5卷引用:上海市青浦区2023届高三一模数学试题
上海市青浦区2023届高三一模数学试题(已下线)核心考点09导数的应用(1)浙江省杭州市桐庐中学2022-2023学年高三上学期1月期末数学试题上海市复旦大学附属中学2023-2024学年高三下学期三模数学试题(已下线)上海市高二下学期期末真题必刷04(压轴题)--高二期末考点大串讲(沪教版2020选修)
名校
6 . 已知函数
,
(1)求函数
在
处的切线方程;
(2)若函数
在区间
内有唯一极值点
,解答以下问题:
(i)求实数a的取值范围;
(ii)证明:
在区间
内有唯一零点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53db73b6d8b8cea2421dabd955f146ef.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f00f2f6ab162f9333ec55db195d663b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
(i)求实数a的取值范围;
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ff8dca35b759d3051b62badd7d76bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddcd777d9a19b5d4016fef6a0650cb85.png)
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2022-12-15更新
|
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5卷引用:上海市华东师范大学第二附属中学2022-2023学年高二下学期5月月考数学试题
(已下线)上海市华东师范大学第二附属中学2022-2023学年高二下学期5月月考数学试题(已下线)第九章 导数与三角函数的联袂 专题四 利用导数证明含三角函数的不等式 微点3 利用导数证明含三角函数的不等式(三)(已下线)专题05导数及其应用--高二期末考点大串讲(沪教版2020选修)福建省上杭县第二中学2023届高三上学期12月月考数学试题福建省福州市八县(市、区)一中2023届高三上学期期中联考数学试题
7 . 已知
,
(1)求函数
的导数,并证明:函数
在
上是严格减函数(常数
为自然对数的底);
(2)根据(1),判断并证明
与
的大小关系,并请推广至一般的结论(无须证明);
(3)已知
、
是正整数,
,
,求证:
是满足条件的唯一一组值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f53f81bca037a4383c1fab122a3cd3d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b4888d8cf85f200763db925ce501b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(2)根据(1),判断并证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8520e118f7e2aab0cea0fc23c833ccbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15d2a3cd491be27bc3d8799b3f9f610.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efdc0e0ca559f0f1af6127545f356fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e1c681b27df538bd4742f6cd8298ae.png)
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2022-12-15更新
|
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6卷引用:上海市嘉定区2023届高三上学期一模数学试题
上海市嘉定区2023届高三上学期一模数学试题(已下线)核心考点09导数的应用(1)上海市静安区市北中学2024届高三上学期12月月考数学试题重庆市2023届高三下学期2月月度质量检测数学试题(已下线)上海市高二下学期期末真题必刷01(易错题)--高二期末考点大串讲(沪教版2020选修)(已下线)上海市高二下学期期末真题必刷04(压轴题)--高二期末考点大串讲(沪教版2020选修)
名校
8 . 已知函数
,设
,
.
(1)若
在
上有解,求
的取值范围;
(2)若
,证明:当
时,
成立;
(3)若
恰有三个不同的根,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169d6b56a477b4fd06df5b2d0243871b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45668be61579954816d0424ba6dcc7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe87244d0d10df530e86eb77ea243ba8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaeef1143c509edf002e685c5fbfc04b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b4888d8cf85f200763db925ce501b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fd9ff0a4c50c954327ae4869f06ee1.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a26e56918446fa45ddb8f2f9f17f45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234889698c65007802b83b74218dd53b.png)
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2022-11-28更新
|
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2卷引用:上海市格致中学2023届高三下学期3月阶段性测试数学试题
名校
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4e6107be46de0bb91fcecb65b9ee2a.png)
(1)若1是
的极值点,求a的值;
(2)求
的单调区间:
(3) 已知
有两个解
,
(i)直接写出a的取值范围;(无需过程)
(ii)λ为正实数,若对于符合题意的任意
,当
时都有
,求λ的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4e6107be46de0bb91fcecb65b9ee2a.png)
(1)若1是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3) 已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1df628874faa615d0cf49e38c6b9968a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(i)直接写出a的取值范围;(无需过程)
(ii)λ为正实数,若对于符合题意的任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df7ea8007570536864a5cf4b00a8d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafb39935a3b8eee7b2529063ab3fda6.png)
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2022-10-30更新
|
1621次组卷
|
7卷引用:上海市四校(南洋模范中学、大同中学、控江中学、曹杨二中)2023届高三下学期3月联考2数学试题
名校
10 . 已知函数
.
(1)求函数
的零点;
(2)证明:当
时,函数
是
上的严格增函数;
(3)设
,若对任意
,
恒成立,求正实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da5bf1fbb7d7339058beb960a4c6ae5f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76507928e4468b7e3b096bc7f3e62cd.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01890ce9d5ecec35eb0d4ef26ad9481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e23b1beceb47324577bfbfc118cf00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a41e0308d7fbdecab686b8f7ee4838d0.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ab976d37f4b11aa304628295d53cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efaa6571bd68afbbf09a6cc86e7236d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1f4d3e19d974d600e9df098fd4699fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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