1 . 已知
,函数
,
.
(1)求函数
的单调区间和极值;
(2)设
较小的零点为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7024cf60d3372f97899a7087cec0e87b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c11a11eae6199342d2d0fc671c43e70.png)
您最近一年使用:0次
2023-02-15更新
|
1554次组卷
|
3卷引用:浙江省十校联盟2023届高三下学期2月第三次联考数学试题
2021·全国·模拟预测
名校
解题方法
2 . 设函数
.
(1)求函数
的单调区间;
(2)若函数
有两个不同的零点
,
,
为
的导函数,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98452a45746410926fa3ab006338854e.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e737b076dbc720db3030a7efb84e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b91118c18ef731302a7a54f33702bf.png)
您最近一年使用:0次
解题方法
3 . 设函数
,其中
.
(1)当
,
时,求证:
;
(2)若
为
的极值点,且
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7523770dc4b9e44183a7b3dc2e9cbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77cbaa7e55d776be06b790b6e4206946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
4 . 已知函数
.
(1)求
的单调区间;
(2)设
,
都有
成立,证明:
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e36e6158c7da6ebbf95da58658a998.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fdf5828da3d88a6480c9ba954f9a649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33d41d398944a02f613784ff1ceeaf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9899b04fe82109e382fac168295a65db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33d41d398944a02f613784ff1ceeaf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339db9d7fb9ff3f07172653144d4ba7a.png)
您最近一年使用:0次
名校
5 . 已知函数
.
(1)讨论函数
单调性;
(2)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70df9d6d6d40c2b5268065aca23f0519.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102c0f51abffb2ec0bcd48ef51d2c292.png)
您最近一年使用:0次
2020-04-24更新
|
1009次组卷
|
3卷引用:2020届甘肃省第一次高考诊断考试理科数学试题
6 . 已知函数
的图象在
处的切线方程是
.
(1)求
的值;
(2)若函数
,讨论
的单调性与极值;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a22d245faf4c7128bca2401c6bff7edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d743c1642f3ac139261b0154e83492e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5be3af0c67a20bee47063487d305f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2242c8ae8bebe7d6e3515cb8c35bc52a.png)
您最近一年使用:0次
名校
7 . 已知函数
.
(1)讨论
的单调区间;
(2)当
且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5982b422c4168ec4b7e238e52b276d.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99b13836d1afbbec124efb3fbfd7582.png)
您最近一年使用:0次
名校
8 . 设函数
.
(1)若当
时,
取得极值,求
的值,并求
的单调区间.
(2)若
存在两个极值点
,求
的取值范围,并证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8923affba77d55b330a58dd208d84b04.png)
(1)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d792f5cb9bfd937e5e965310ec1bfd.png)
您最近一年使用:0次
2020-01-12更新
|
1621次组卷
|
7卷引用:河南省洛阳市2019-2020学年高三上学期第一次统一考试(1月)数学(文)试题
河南省洛阳市2019-2020学年高三上学期第一次统一考试(1月)数学(文)试题2020届福建省福州第一中学高三下学期开学质检数学(文)试题山东省滕州一中2019-2020学年高三4月份线上模拟数学试题2020届陕西省西安市西北工业大学附中高三下学期4月适应性测试数学(理)试题(已下线)强化卷09(4月)-冲刺2020高考数学之拿高分题目强化卷(山东专版)(已下线)专题19利用导数证明不等式(讲)(文科)第一篇 热点、难点突破篇-《2022年高考文科数学二轮复习讲练测》(全国课标版)(已下线)专题19利用导数证明不等式(讲)(理科)第一篇 热点、难点突破篇-《2022年高考理科数学二轮复习讲练测》(全国课标版)
名校
9 . 已知函数
.
(1)若曲线
在
处切线与坐标轴围成的三角形面积为
,求实数
的值;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8fbe0029cfd67b942bb2b941cfdbf17.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0874f019492261eb175bdcc08c189d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e9222ffc26c0e6bfbf252ab5d8a520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6472fd58482c9987f6bbe7c687df5938.png)
您最近一年使用:0次
2020-01-06更新
|
819次组卷
|
3卷引用:湖南省郴州市2019-2020学年高三第一次教学质量监测(12月) 数学(文)试题
10 . 已知函数
.
(1)当
时,求证:
在
上是单调递减函数;
(2)若函数
有两个正零点
、
,求
的取值范围,并证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4985d1544dd0a66cf8158197e89af01.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6631f27acf79edfc388868bacb473dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574824d85f44d42246529ac135c0391c.png)
您最近一年使用:0次