名校
解题方法
1 . 已知函数
.
(1)证明:
;
(2)若
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4eac94d11e0bac2b9afa4c15db21a06.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e800118a8a4dcf31180650dd8024f541.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feda46b21a628272ca004196445cc0e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-01-15更新
|
510次组卷
|
4卷引用:江西省重点中学协作体2022-2023学年高二下学期第一次(2月)联考数学试题
解题方法
2 . 已知函数
,且
的极值点为
.
(1)求
;
(2)证明:
;
(3)若函数
有两个不同的零点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db117c5c7215515e036e3a97a01a2b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36cccdb3b69ec29b9dacfae2f2e70242.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bd0f17fea5bb6330a209ecba572ed0.png)
您最近一年使用:0次
名校
3 . 已知函数
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4617330f4ff651bfceb9fcbbc13eb87d.png)
(I)求函数
的单调区间;
(II)若
在
恒成立,求
的取值范围;
(III)当
,
时,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51b45c6ae148fd6ee91b3cd79050726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c235ca725ade5c8b07943ac106a90fb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4617330f4ff651bfceb9fcbbc13eb87d.png)
(I)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(II)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c629ad5850f756ddea9169bdfed4c4f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b916c6d3fb2fdc67421489f207c93903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(III)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0754f7a69b18a387464d65d9c1505e22.png)
您最近一年使用:0次
2019-05-22更新
|
3028次组卷
|
6卷引用:江西省九江市修水县2018-2019学年度高二下学期数学(理科)期末试题
江西省九江市修水县2018-2019学年度高二下学期数学(理科)期末试题【区级联考】天津市北辰区2019届高三高考模拟考试数学(理)试题黑龙江省农垦建三江管理局第一高级中学2020-2021学年高三上学期期中考试 数学(理)试题(已下线)第12讲 拓展五:利用洛必达法则解决导数问题(讲)-2023年高考数学一轮复习讲练测(新教材新高考)(已下线)专题4 洛必达法则(已下线)第九章 导数与三角函数的联袂 专题四 利用导数证明含三角函数的不等式 微点1 利用导数证明含三角函数的不等式(一)
名校
解题方法
4 . 已知函数
,
,
为其导函数.函数
在其定义域
内有零点
.
(1)求实数a的取值范围;
(2)设函数
,求证:对任意的
且
,
.
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e53a190256f3683315a8b60811b767b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.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/0109d06b8be2e402b5ffbb0aeb501009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(1)求实数a的取值范围;
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65760052439f87abfdb77c5e8898ee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb3ba497136e83ffa942f09c14b5b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f28c1416289e753d70b6e6c0b7e836e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac677478518ff0b76c3ab510ce625354.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee37a9ca13d5790552afc8facdd28f67.png)
您最近一年使用:0次
2023-11-08更新
|
486次组卷
|
2卷引用:江西省抚州市乐安县第二中学2024届高三上学期11月期中检测数学试题
名校
5 . 已知函数
,(其中a为非零实数)
(1)讨论
的单调性:
(2)若函数
(e为自然对数的底数)有两个零点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c453eb269ce3b10fbc1ae07c7bbc564e.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5af7cb1d3d051614696cd4761b3f559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abbf0c24f43ad10d80e102de94df3522.png)
您最近一年使用:0次
2022-03-09更新
|
1077次组卷
|
3卷引用:江西省重点中学盟校2022届高三第一次联考数学(理)试题
解题方法
6 . 已知函数
的导函数
满足:
,且
,当
时,
恒成立,则实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a9bce4a65b936894f860ed0fe2b2b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46305fedfb17a208a8b4cab7ebceddfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e82c4003d20b36777f7aea584e3dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f99c9cf9cc1234f5c2e769c14e3afe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
7 . 已知函数
.
(1)若函数
在
上单调递增,求
的取值范围;
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf69363bb10800f482dd12de5a2919cd.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55cfcbb5c5950e18a8452b38bb17036.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d74497a269523c5da53966918c8514dc.png)
您最近一年使用:0次
2022-05-18更新
|
1069次组卷
|
2卷引用:江西省宜春市高安市灰埠中学2022-2023学年高二下学期5月期中考试数学试题
解题方法
8 . 已知函数
有两个零点
.
(1)求实数a的取值范围;
(2)求证:
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40fa8f8f5b08ba22c03f57d82b5445f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(1)求实数a的取值范围;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfcbdd81ba24d15dcb3af31f8942b0ab.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7b02489f088df9ba0c7eefbd1c6055.png)
您最近一年使用:0次
名校
解题方法
9 . 已知函数
,则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ffff62fdce7a7930cd42bcc668569b.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() |
您最近一年使用:0次
2023-12-16更新
|
449次组卷
|
2卷引用:江西省上饶市广丰一中2024届高三上学期12月月考数学试题
10 . 已知函数
,
.
(1)当
时,证明:
;
(2)当
时,判断
零点的个数并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea04b72efca9861a248432a23bb965c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次