1 . 已知函数
,其中
.
(1)若
的图象在
处的切线过点
,求a的值;
(2)证明:
,
,其中e的值约为2.718,它是自然对数的底数;
(3)当
时,求证:
有3个零点,且3个零点之积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f1bbf403a59dabd27fea4fa107f021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若
![](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/fad20e2bc6576fc461419f8f138d26e7.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de855c40083452bcd52e553ee39fdf4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd24b65e26ae038dd2ecbaa9e859bfa3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
2 . 已知函数
.
(1)证明函数
有唯一极小值点;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/546ae928f16d456f73c46dcd5e58d9bb.png)
(1)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2b0b6ed5ced8ee79aa5a0351ac5b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/449c9623d6410aa84fa705d25069acdf.png)
您最近一年使用:0次
2023-02-10更新
|
902次组卷
|
6卷引用:广东省新高考2023届高三下学期开学调研数学试题
广东省新高考2023届高三下学期开学调研数学试题广东省东莞市海德实验学校2022-2023学年高二下学期第一次月考(3月)数学试题湖南省长沙市宁乡市第一高级中学2022-2023学年高三上学期12月月考数学试题(已下线)拓展五:利用导数证明不等式的9种方法总结-【帮课堂】2022-2023学年高二数学同步精品讲义(人教A版2019选择性必修第二册)新疆乌鲁木齐市第十二中学2022-2023学年高二下学期期中数学试题黑龙江省七台河市勃利县高级中学2023-2024学年高三上学期9月月考数学试题
名校
解题方法
3 . 已知数列
为数列
的前n项和,且
.
(1)求数列
的通项公式;
(2)求证:
;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2400f7c3789ea51e238dc193167102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a370de02d7c4e5e7bf601eba5de016b4.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946cca301525e6dcb842ea04dde3b1db.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5950369eb310c285e656600a5d8215.png)
您最近一年使用:0次
2022-09-23更新
|
2381次组卷
|
9卷引用:广东省广州市南武中学2023届高三上学期十月综合训练数学试题
名校
解题方法
4 . 对于正实数
有基本不等式:
,其中
,为
的算术平均数,
,为
的几何平均数.现定义
的对数平均数:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b454c722316d2e530e935987adcb81.png)
(1)设
,求证:
:
(2)①证明不等式:
:
②若不等式
对于任意的正实数
恒成立,求正实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1f53d48a9ad9f88f4b3c14f2637d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b0bcbf744c3da99e6488f8e66cb8c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee128ea692363f9a7b0cf0958e5f74e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b9514b5e245327b05261ac9a946063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b454c722316d2e530e935987adcb81.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855eaf612ac4e4505948ee0a1c3c080e.png)
(2)①证明不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8188a2ffd328c07a359ea9be8102a70.png)
②若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0a551c4d6741cae6d513122166db90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aff93e03b22c6053550486ea4e911c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2022-05-11更新
|
492次组卷
|
6卷引用:广东省中山市一中学2023-2024学年高二下学期第一次段考数学试题
解题方法
5 . (1)求函数
的单调区间.
(2)用向量方法证明:已知直线l,a和平面
,
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b6a91900d0dfa6296cdee22fdd6fe6.png)
(2)用向量方法证明:已知直线l,a和平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c29f79e8e51e7c35213df9ebe697bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d2a947e3fdc214d40a7d3f54679a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9b2c3117321788078867bd0701743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad25ad7785af488a004cae4436019ff.png)
您最近一年使用:0次
名校
6 . 已知函数
,其中a为非零常数.
讨论
的极值点个数,并说明理由;
若
,
证明:
在区间
内有且仅有1个零点;
设
为
的极值点,
为
的零点且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547a529375ea314a0e4f552a1f124864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e63138f920c05c2c0e4d1567c77e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372470aee75717ec33c53c3434eb126d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2dfaa0e63b9c720093ab80e2ed24c9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18eca8193d91e13a240dec14be339cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbf1211335bcbc0ebb05414669eda0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040135d64192de075ba0cc9f11ddbc9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca8325e253d8c7d9f93de39db5c4b20a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d095d38de6613fa452d0a46b6f00b7f.png)
您最近一年使用:0次
2020-01-30更新
|
1028次组卷
|
7卷引用:2020届广东省广州市执信中学高三2月月考数学(理)试题
2020届广东省广州市执信中学高三2月月考数学(理)试题2020届湖北省黄冈市高三上学期期末数学(理)试题2020届湖北省第五届高考测评活动高三元月调考理科数学试题(已下线)必刷卷10-2020年高考数学必刷试卷(新高考)【学科网名师堂】-《2020年新高考政策解读与配套资源》2020届河南省平顶山市第一中学高三下学期开学检测(线上)文数试题安徽师范大学附属中学2019-2020学年高三下学期2月第一次月考理科数学试题(已下线)卷10-2020年高考数学冲刺逆袭必备卷(山东、海南专用)【学科网名师堂】
名校
7 . 已知函数
,其中
.
(Ⅰ)讨论
的单调性;
(Ⅱ)当
时,证明:
;
(Ⅲ)求证:对任意正整数n,都有
(其中e≈2.7183为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9f7cb75c5500ad56dfe0f178dedb92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(Ⅰ)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/257810d08006d4b886331966c99767ea.png)
(Ⅲ)求证:对任意正整数n,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf0f4b1e329db4bf6070f993297f9b9.png)
您最近一年使用:0次
2019-01-12更新
|
4102次组卷
|
10卷引用:广东省佛山市三水区三水中学2019-2020学年高二下学期第二次统考数学试题
广东省佛山市三水区三水中学2019-2020学年高二下学期第二次统考数学试题【区级联考】天津市蓟州等部分区2019届高三上学期期末联考数学(文)试题【区级联考】天津市部分区2019届高三(上)期末数学(文科)试题【全国百强校】四川省成都市成都外国语学校2018-2019学年高二下学期期中考试文科数学试题【全国百强校】河北省武邑中学2019届高三下学期第一次模拟考试数学(文)试题江西省五市八校2019-2020学年高三第二次联考文科数学试题湖北省武汉二中2019-2020学年高二下学期4月第二次线上测试数学试题四川省宜宾市第四中学校2019-2020学年高二下学期期中考试数学(理)试题四川省宜宾市第四中学校2019-2020学年高二下学期期中考试数学(文)试题黑龙江省大庆实验中学2019届高三普通高等学校招生全国统一考试文科数学模拟试题
名校
解题方法
8 . 已知
为实常数,函数
.
(1)若
在
是减函数,求实数
的取值范围;
(2)当
时函数
有两个不同的零点
,求证:
且
.(注:
为自然对数的底数);
(3)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5768ce230120f50c9a3f629673dfa4cb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e1c9c97de9198d47306216e9961b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae74c724114bfeff024dd7b79f5edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/885d5c703d5eaaa8de21e03ea115aa77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(3)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1cb9de231f8e9daa78deeb9210077a.png)
您最近一年使用:0次
14-15高三上·贵州遵义·阶段练习
9 . 已知函数
.
(1)若曲线
在
处的切线为
,求
的值;
(2)设![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/3d3eea81768840109f218466174f7983.png)
,
,证明:当
时,
的图象始终在
的图象的下方;
(3)当
时,设
,(
为自然对数的底数),
表示
导函数,求证:对于曲线
上的不同两点
,
,
,存在唯一的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
,使直线
的斜率等于
.
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/1b4c32a0cfb14de8bc6a26a54311fedd.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6513e7d1ad16ed0ba54da88b098dc1d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/3d3eea81768840109f218466174f7983.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/136995a0dea24df88860330a01092f62.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/9d2148a4da27426cbc7db6e777e7a69c.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/8df1a95edcd34a89b926fc168f2aa20d.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/df61580512c44e8691de8efbd7e5053c.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/fea3e068dd124c0ca98cbceba9b3347f.png)
(3)当
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/d6b34f6dada044619914cecb62849103.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/76a965da5b87446a9308156fdaaf7d8b.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/3865acfd7def4e79b7d712d720b9c02c.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/52b6a1f9256449b882a840dfa9462d64.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/2ec2086f962d4e64be08cb307f6d031b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ff82ebdfad5e7de1c7487b0b817a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a53e311ee0b5085e7e5a45c606daa5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5300f2d0cdf34de189a6be1b518891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631f75b2df538cc121bad64d9deb774d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571959319609344/1571959325589504/STEM/e89b836c01ae46a68c19ed11ecb9cf6e.png)
您最近一年使用:0次
10 . 设函数
(
,
),
.
(Ⅰ)当
时,求曲线
在点
处的切线方程
,并证明
(
)恒成立;
(Ⅱ)当
时,若
对于任意
恒成立,求
的取值范围;
(Ⅲ)求证:
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f200f49eac20206f706571853b442a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd1b5c820f64b9c3033d2a34ee6a925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f8e40c2ffde956967d909ba8a09d04.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657435e1fda84118e7f63c97505c8b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2072fe5a3f23ac574dde4f0abb2fd5e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3d641761af730cc20b05a79fad66f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4204025f952518d9f80820fe4906522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec9ff3d82ba1c5f4bf4d217371ddee8.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82bd3a63b4be53a6e3538b7846e45662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c95d0a9384e55103eae330396de544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f408648547408fab1ec0e703a989baaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅲ)求证:
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