解题方法
1 . 已知函数
.
(1)若
,求证:
.
(2)讨论函数
的极值;
(3)已知
,证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c62a17669c88f983c5d3da9138a9db55.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0155265d7c6452a7773de26a3cb66a6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211e655e16740f33849b82e059b42d0d.png)
您最近一年使用:0次
解题方法
2 . 已知函数
,
.
(1)求函数
的极大值;
(2)求证:
;
(3)对于函数
与
定义域上的任意实数
,若存在常数
,
,使得
和
都成立,则称直线
为函数
与
的“分界线”.设函数
,试探究函数
与
是否存在“分界线”?若存在,请加以证明,并求出
,
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd47380305102e11cc930e008d25c75b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d5bccea7ccd7a3c854c6fb4cb5ca75.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43876a5fdbcac476e7eed5a24434a484.png)
(3)对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a48d51c7e8a1f5cf3349e07a8ac4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745408b6bd3b6feab62095c84b81a33d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88bd707d897ad723c5bf4809f278cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2012高二下·浙江嘉兴·学业考试
名校
解题方法
3 . 已知函数
.
(1)求函数
的极值;
(2)对于曲线上的不同两点
,如果存在曲线上的点
,且
使得曲线在点
处的切线
,则称
为弦
的伴随直线,特别地,当
时,又称
为
的
—伴随直线.
①求证:曲线
的任意一条弦均有伴随直线,并且伴随直线是唯一的;
②是否存在曲线
,使得曲线
的任意一条弦均有
—伴随直线?若存在,给出一条这样的曲线,并证明你的结论;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aca3bb4e25eaef56fb7ba9c79da0944.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)对于曲线上的不同两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a00dc6f0af494437c9f98223f3e861f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2752e086b85f9fbb95010bf771072af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69264c1535cf0ccdac2d186da669df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af1635f56ef7fb304920f253f30fbba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0429adcf685c47f2d97d567387385461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
①求证:曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
②是否存在曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
您最近一年使用:0次
2016-12-01更新
|
986次组卷
|
4卷引用:2011-2012学年浙江省嘉兴一中高二下学期摸底考试理科数学试卷
(已下线)2011-2012学年浙江省嘉兴一中高二下学期摸底考试理科数学试卷2016-2017学年湖南省长沙市第一中学高二下学期第一次月考数学(理)试卷2020届辽宁省大连市高三上学期第二次模拟考试数学(理)试卷(已下线)江苏省苏锡常镇四市2023届高三下学期3月教学情况调研(一)数学试题变式题17-22
真题
4 . 设函数
,其中
.证明:当
时,函数
没有极值点;当
时,函数
有且只有一个极值点,并求出极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd0b3561b5874364541c12dde46ac349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eae9ba258299eb489b490594397e23c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ed37ee7432002cd0e0978b2012e184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
5 . 已知函数
.
(1)若曲线
在点
处的切线平行于x轴,求函数
的极值.
(2)证明:函数
至多有一个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ca93e741f534b104d46fa9da70e291.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbcfefd87538b7a6a0c61d71f94938ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2010·浙江·一模
名校
6 . 已知实数
满足
,设函数
.
(1)当
时,求
的极小值;
(2)若函数
与
的极小值点相等,证明:
的极大值不大于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88d1d53ce311adb0da45b4a38107ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a9a56073c27b81eb75aff4768ff5e6.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7bf74e4eb8ca4fa2829e4576e4023f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4145786b3e8bd65662a0874a9b2c4f6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e044325ad7fdaef36758daa8b9fe4456.png)
您最近一年使用:0次
2022-10-12更新
|
415次组卷
|
8卷引用:2011届浙江省高三高考样卷数学文卷
(已下线)2011届浙江省高三高考样卷数学文卷(已下线)2012-2013学年湖北武汉部分重点中学高二下学期期中考试理数学试卷吉林省长春市第一中学2018-2019学年高二下学期第一次月考数学(理)试题河南省名校联盟2021-2022学年高三上学期10月联考文科数学试题甘肃省张掖市第一中学2022-2023学年高三上学期10月月考数学(文)试题甘肃省张掖市某重点校2022-2023学年高三上学期第一次月考数学(文)试题(已下线)5.3.2~5.3.3 极大值与极小值、最大值与最小值 (4)(已下线)5.3.2 函数的极值与最大(小)值(精讲)-【题型分类归纳】2022-2023学年高二数学同步讲与练(人教A版2019选择性必修第二册)
解题方法
7 . 已知函数
.
(1)求函数
的极值;
(2)证明:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef278509c5a53f41402ecf1785c883e.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8365233f341451598eb50525a1557a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec5f0a10e28f80b2f5b1a40afa72494.png)
您最近一年使用:0次
解题方法
8 . 设函数
.
(1)若
,求
的极大值;
(2)若
,证明:
只有一个零点.(提示:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfbd94b0f2a2078a9d6fdfd1eabedad.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80d0cbe26bbac441eceb3e71a29010e.png)
您最近一年使用:0次
名校
9 . 已知函数
,
.
(1)求
及
的极小值;
(2)若
,
,记
(注:
),证明:
在
上有唯一的一个零点;
(3)若
在
有两个不同的交点,记
,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93183c3fb35814c854c6fc7fae474c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8068ea5b615b776a752623e4fe3dd6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680c514271ab4a9c8424873bd5e2b154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1864b98153200f5929787295de2c1e38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22492c489b9f25f08ccbf984e635793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3496a77a9331f42500554c290ac0acf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c985d6a1e024804ccd86092e4e020cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1864b98153200f5929787295de2c1e38.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22492c489b9f25f08ccbf984e635793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解题方法
10 . 已知函数
.
(1)若
是函数
的极大值点,函数
的极小值为
.
①求实数
的取值范围及
的表达式;
②记
为
的最大值,求证:
(
是自然对数的底).
(2)若
在区间
上有两个极值点
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6caa4139ae3ce1f7c9271bd072a71c17.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2ac429737efebf150a1bd088ba846.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2ac429737efebf150a1bd088ba846.png)
②记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ef957460e2108cd4d257fc140597c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561cb11261a996c0960d626fd18f4e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0825fbec45b977025a3df012ec5963.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e78a499596d8d268faf03f37e86cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446dcad9c82048efb3ab2ca034695b97.png)
您最近一年使用:0次