1 . 已知函数
,
.
(1)若曲线
的切线
经过点
,求
的方程;
(2)若方程
有两个不相等的实数根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aebf798213615bbf6b7911fb0667745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e2512fa0dd8a511729929e2a69ad6e.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49756172230de326c6b84e89bcf0eae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc154a401be4ce83bc265d130365744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-05-14更新
|
1176次组卷
|
2卷引用:【全国市级联考】云南省昆明市2018届高三5月适应性检测数学文试题
名校
2 . 已知函数
.
(1)
时,求函数
的单调区间;
(2)设
,使不等式
对任意的
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535c2998d47ffaab2938ccf73972c392.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab90968836334c7d96630134c06df38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2e7d7e1c6b53271b6828552d3f7e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87e4d8a0497dbbeeed6139db4019f0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解题方法
3 . 已知函数
,
.
(1)当
时,求函数
的极值;
(2)若
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456993afb645776a384e47d45c59a91b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616e29c9a401d7fd9092c8a69d5f20cc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c944c1c2791f64d1f371d43e9a419983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a5abc09115d98a158affd1a307e15f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047056c99b39c70fa40d3c8178e5b631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46810b49fe55d60aaf8dd596f7cec20f.png)
您最近一年使用:0次
名校
4 . 已知函数
.
(1)试讨论函数
的单调性;
(2)设实数
使得
对
恒成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f887f56942952a1caa248ab43adda90.png)
(1)试讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a50bf2c7f35fbd3f35b7a24465a2ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6a8984aa398bf767ccd9a601d77983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2018-03-29更新
|
575次组卷
|
2卷引用:云南省保山市2018届普通高中高三毕业生第二次市级理科数学统测试题
5 . 已知函数
.
(1)研究函数
的单调性;
(2)设函数
有两个不同的零点
,且
.
(ⅰ)求
的取值范围;(ⅱ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60086fb4a7d2dfcfd618a9ab2055ae9e.png)
(1)研究函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4900c67f4b57fa430c4bd863f8e896.png)
您最近一年使用:0次
6 . 已知
是自然对数的底数,
,
,
,
.
(1)设
,求
的极值;
(2)设
,求证:函数
没有零点;
(3)若
,设
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3ca10d8df32a1c2882727c06d8ff20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6c86deb114585729f72fb2c92f8e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76ea3bb816f7bbb9162c41105566175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dc36499dce1eef2b12d922743fd8068.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015646f33131c176fcb3156522d18c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7bfbaeb362904916147b9ad31c12c5a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1e7c16dff54067dd721d824048c99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067069f9689c08ca40e2698c4461f1e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9797c88189f800a0f93c8390fc721906.png)
您最近一年使用:0次
名校
7 . 已知函数
,
.
(1)当
时,求
的单调区间;
(2)当
时,若对任意
,都有
成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/765129f97e6dc87e4c1c8455160b6b07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6850bb223adfcd537595b6c7de01d7b7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8e1dd8da540badcb9a8f427c5b202e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](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/3485a6e16799fbeeda320f7f3e8db329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2017-04-14更新
|
1133次组卷
|
3卷引用:云南省2017届高三第二次复习统一检测文科数学试题
名校
8 . 设函数
.
(1)若
,证明:
在
上存在唯一零点;
(2)设函数
,(
表示
中的较小值),若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d40dd42824af0a1e9648c9ffcb49f5b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66dea8b0511ee08a5754cfbcf322539b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2316563595e29fd4279845ab8afc5ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fce155963060b2e5b9147a185897cc.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d1bebc2eebab4a624ba215bbdf1827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ebf57026ef23135a51650331ac85220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377fd49728f7301552ed07294e7b8ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2017-04-11更新
|
1712次组卷
|
4卷引用:云南省昆明市2017届高三下学期第二次统测数学(文)试题
云南省昆明市2017届高三下学期第二次统测数学(文)试题【全国百强校】江西省南昌市第二中学2017-2018学年高二下学期期末考试数学(文)试题(已下线)第20讲 不等式恒成立之max,min问题-突破2022年新高考数学导数压轴解答题精选精练(已下线)重难点突破07 不等式恒成立问题(十大题型)-2
解题方法
9 . 已知定义在实数集
上的偶函数
,当
时,
,若存在
,对任意
,都有
, 则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff6838d84b68c6f0d3b93b196d9b08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51159984b2cb00f30b3986315019623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb7afae7a0124ff2554c24f09f0f822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4249ce7a3df1a2859afbf25a0118f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 已知函数
.
(1)若
恒成立,试确定实数
的取值范围;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1c80673df9fc4ceaccec5344c9e2f3a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9da98e415cc14fc6e03561a7a72d95b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3616f65644309838e78029db8d37ad9a.png)
您最近一年使用:0次