名校
1 . 已知函数
,
.
(1)求函数
的单调区间.
(2)若
对任意
成立,求正实数
的取值范围.
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f53f81bca037a4383c1fab122a3cd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1edb3d19c5547fc1f1a9b04d3d22b0d5.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30481398cc3a68f974f09fb2187b58e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb3fa29086bd123aa72f5ed28da0d00.png)
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2021-08-24更新
|
325次组卷
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3卷引用:5.3.1 单调性-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
(已下线)5.3.1 单调性-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册) 广东省佛山市南海区罗村高级中学2020-2021学年高二下学期期中数学试题河北省隆化存瑞中学2023届高三下学期2月月考数学试题
名校
解题方法
2 . 设
,函数
,函数
(其中
为自然对数的底数).
(1)若
且
,比较
,
,
的大小;
(2)若函数
与函数
的图象分别位于直线
的两侧,求
的所有可能的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b44ce1f38097acac14cd28b5dc07fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f614d51bfd2558d8f094798b8ad5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab4f24fe4f8512e802ab2406ab30510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a551a88ac426439803f564a3bbee04a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29871765b312270dfacfbed002b8865d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb6da917059d222ce74adae88054fbc.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2021-08-23更新
|
305次组卷
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3卷引用:江苏省常州市前黄高级中学2021届高三下学期学情检测(三)数学试题
江苏省常州市前黄高级中学2021届高三下学期学情检测(三)数学试题(已下线)第5章《导数及其应用》 培优测试卷(一)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册) 江西省丰城中学2023届高三(尖子班、重点班)上学期数学(文)期中复习试题
3 . 已知函数
,其中
.
(1)当
时,函数
的单调性;
(2)若函数
的导函数
在区间
上存在零点,证明:当
时
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6d19700c57b52769f38c86d8b6eda5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08290af79305df59bc0a1fc2b7c4f7c5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7994bbcf39f4dda34e877b21af71f103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f4a960fe335b8114a928fec2ed1da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7704170f220bc12ad75a1d8b6ec51e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8efd6ae0b9d6b86ab509fb5e236570.png)
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4 . 设函数
,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecb4900f12c0a247376b774d470e4fb8.png)
A.不等式![]() ![]() |
B.函数![]() ![]() ![]() |
C.当![]() ![]() |
D.若函数![]() ![]() |
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2021-03-27更新
|
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2卷引用:江苏省徐州市邳州市明德实验学校2020-2021学年高二下学期第一次学情调研数学试题
5 . 已知函数
.
(1)当
时,求
的单调区间;
(2)设
,若存在正数
,使不等式
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c285e83c331386c41ae41070a3064e3a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990d3feee85e869ea9ab561ff63d46a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 已知函数
.
(1)当
时,求
的单调区间;
(2)若
有三个极值点
、
、
.
(i)求实数
的取值范围;
(ii)证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/087c1bd6ea45e52902819ef8fb225079.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.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/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fc0ce080b8ad8b63ba63259c680b6.png)
(i)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafaeedddee618f5e86a5f2efd15b2cd.png)
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7 . 已知函数
.
(1)若
,求函数
的极值;
(2)若
是函数
的极小值点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf411ed943a8727f2bbc3aa065d676df.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](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)
您最近一年使用:0次
名校
8 . 已知函数
.
(1)当
求
的单调区间;
(2)若函数
有两个极值点
且
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46cdc3473c9ff8999979e287df9a04ee.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc895959e9bc92294dc9dd2263dbf0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a373c7e1778d28d4da71a371a7979f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-08-15更新
|
332次组卷
|
5卷引用:江苏省扬州市邗江区蒋王中学2021-2022学年高三上学期第一次检测数学试题
名校
9 . 函数
,以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d38fc95a2ff3682f2ebc8576b73eeb2.png)
A.函数的减区间为![]() | B.过点![]() ![]() |
C.函数的最小值为![]() | D.![]() ![]() |
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10 . 已知函数
.
(1)若函数
,求函数
的单调区间和极值;
(2)是否存在同时与函数
的图象都相切的直线
?若存在,求出符合条件的直线
的条数并证明;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d52bee60da5d6b728ed40c002bddcc.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7333432b22f884abf06ad88c34f59f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
(2)是否存在同时与函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0ed188d083966baaae94e6b86064f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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