解题方法
1 . 已知函数
.
(1)
时,求
的零点个数;
(2)若
恒成立,求实数
的最大值;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf8a50553b1b9040eb5fd8149602f0b.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3c2be7482719651bcf491949681e05.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7c3a84d5c3ab338a6b95d1e4a7ce8a.png)
您最近一年使用:0次
名校
解题方法
2 . 记
.
(1)若
,求证:
对任意的
恒成立;
(2)若直线l:
与
的图象相切于点
.
①试用m表示a与k;
②若k为常数且
),求证:总存在三个不同的实数
,
,
,使得直线l与曲线
,
,
同时相切.(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0eb761a1b7926f785748bbf588a39c8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc28726e303fa2a5ca1c5d74926bbfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
(2)若直线l:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98d225870c139808946d726257ba89f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c846ac5f5576ebb3fb28bba8012f390.png)
①试用m表示a与k;
②若k为常数且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b9f5d64488ad09204340f10d3cf04d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c488de3215dee319cd0cf0badbde4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f88316a636b6a0acdfec4cdab77c9d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800ff501f29a965c4c9dac88263ca2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7739fabf233e5b2136faf751a7ebc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7344b05293a5dfd7d6d199763cf9b3.png)
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2011·江苏·一模
解题方法
3 . 已知函数
,
,
,
.
(1)求函数
在点
处的切线方程;
(2)若
在区间
上恒成立,求
的取值范围;
(3)当
时,求证:在区间
上,满足
恒成立的函数
有无穷多个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bfecd54416e2e0366376999e752915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2216be8742c0fcd67c8185a255aa7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7c6915d8302ea5c84ed1d5e14ef42e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c4f8e8106a49b3a3b60810076989dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51947e18ac12b186aa3c09e62c036af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc40a37a51ff1dbff3bf0ff2e0adf7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
名校
4 . 已知函数
(
)有两个零点
,
,且
.
(1)求a的取值范围:
(2)设函数
的极值点为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d2bcab5acda7636a9ee4be9808a7135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
(1)求a的取值范围:
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c4731f09a45182572b481d3ca6c33b.png)
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5 . 对于函数
与
,若存在实数
满足
,且
,则称
为
的一个
点.
(1)证明:函数
与
不存在
的
点;
(2)若函数
与
存在
的
点
,求
的范围;
(3)已知函数
,证明:存在正实数
,对于区间
内任意一个
皆是函数
的
点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192ded2afcb5ac2f498ad84ebfd91d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd4e5e2e8ee788de9c2f5e34b3a5650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d0d2a14ac5374fe31c385a8cd1336f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d5764793c323fe28c585b8b4af5a1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892f97ad8b85728f98958d0bf5e6f4b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/054775ba84117cafcf511ca8eeb5cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914a49b0d7aedc593a3e87fbab7c31ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8e298ed59fae5ab49e65df71107d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58164fe4f05f14c63dee4419f3baf969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次
2020·江苏·二模
6 . 已知函数
.
(1)试判断函数
的单调性;
(2)若
,求证:
,其中
为自然对数的底数;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bec836c23b476369dc22977f9b5596.png)
(1)试判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c3cd7cded116816a44fa319f57b35a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f7e187e87e87ac0cd6eeeb22055766d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a1e01f50aadda61c77abf78642316a.png)
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7 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd37733bd52885a0b66944c36f623c41.png)
(1)当
时,求
的单调区间;
(2)令
,区间
,
为自然对数的底数.
(ⅰ)若函数
在区间
上有两个极值,求实数
的取值范围;
(ⅱ)设函数
在区间
上的两个极值分别为
和
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd37733bd52885a0b66944c36f623c41.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2620b68f4fc20bb825b451d2afd11092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(ⅰ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(ⅱ)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f0427915ac19bd2f9383d079b2a063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1f6718b4be26dd3274eddbbdf7dd29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bacae1d2a0e7bf4cbc7d4b77b3afb51d.png)
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名校
8 . 已知函数
.
(1)试讨论
的单调性;
(2)证明:对于正数
,存在正数
,使得当
时,有
;
(3)设(1)中的
的最大值为
,求
得最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef368366a49872e501abea7c9af128ea.png)
(1)试讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e6eb290bb52aa18664dca2e72d4b52.png)
(2)证明:对于正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63bf7d31338a50c9a4ea1ca2d12e64c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd13f8d1b174c261fbc87ded651d98d.png)
(3)设(1)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a7b7c834d06f3e28a339db94690172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a7b7c834d06f3e28a339db94690172.png)
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13-14高二下·四川资阳·期末
名校
9 . 已知函数
(
).
(1)当
时,求
的图象在
处的切线方程;
(2)若函数
在
上有两个零点,求实数
的取值范围;
(3)若函数
的图象与
轴有两个不同的交点
,且
,
求证:
(其中
是
的导函数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6640d06b4fdf0ec3c57f6e7d355ebae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6178543c569ba9983fa0180bd5be7e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1733a7dc9eb1c899eb5153d4b006ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b803f91177e9a70ed706d36308103d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c158a550aaa60c8a2282649dae147e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2016-12-03更新
|
979次组卷
|
5卷引用:数学-2022年高考押题预测卷01(江苏专用)
(已下线)数学-2022年高考押题预测卷01(江苏专用)(已下线)2015届湖南省娄底市高中名校高三9月联考文科数学试卷天津市咸水沽第一中学2020-2021学年高三上学期第一次月考数学试题四川省成都市石室阳安中学2024届高三上学期12月月考数学(文)试题(已下线)2013-2014学年四川省资阳市高二下学期期末考试理科数学试卷
名校
解题方法
10 . 已知函数
(
为自然对数的底数)
(1)求
的单调区间;
(2)是否存在正 实数
使得
,若存在求出
,否则说明理由;
(3)若存在不等实数
,使得
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3373c14a97d5719f0dd3d724123d96c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e04b4cd16224102ef696222caa56ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若存在不等实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2037b0bad7c7a312bac1ac0653d9a491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c158a550aaa60c8a2282649dae147e1d.png)
您最近一年使用:0次
2016-12-04更新
|
574次组卷
|
3卷引用:2017届江苏泰州中学高三摸底考试数学试卷