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1 . 对于函数
,
为自然对数的底数),下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cad89a93eb64a1042897ffd26938ae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e8d9500cdc12c4e9159c75e516cdc3.png)
A.函数![]() | B.在区间(0,![]() ![]() ![]() |
C.函数![]() ![]() ![]() | D.![]() |
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2卷引用:重庆市第十一中学校2021届高三上学期10月月考数学试题
2 . 已知函数
,若
是
在
上唯一的极值点,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a90fd8fad54d4dc7dcaaa716e4bc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 函数
在
上的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5fca97ca453872677a0683fc588a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-04-29更新
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2卷引用:重庆市西南大学附属中学校2023-2024学年2023-2024学年高二下学期3月测试数学试题
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4 . (1)当
时,不等式
恒成立,求实数
的取值范围;
(2)已知函数
,
,如果函数
有两个极值点
、
,求证:
.(参考数据:
,
,
,
为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821c35265ccf376d0b84b2ac4400cd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19815447dbb65c5106ec6cd203e6b9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c978eee6f59dc2242d2e926fbbeabd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe87244d0d10df530e86eb77ea243ba8.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/ef22b99cc639ed44d2986493b9ffc807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c894b7d6baa55c80c64e74748dad898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405361d7be3c9e4d462a4e955d8fe3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07df412833b49d563d58219b70ede0b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
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3卷引用:重庆市沙坪坝区第一中学校2019-2020学年高二上学期期末数学试题
重庆市沙坪坝区第一中学校2019-2020学年高二上学期期末数学试题重庆市第一中学2019-2020学年高二上学期期末数学试题(已下线)第01章 导数(B卷提升篇)-2020-2021学年高二数学下学期同步单元AB卷(苏教版)
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5 . 已知函数
.
(1)当
时,求
的单调区间;
(2)当
时,记
的最小值为
,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b7c75f961984b6b9c12773eef0b2a1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfe44972e8bf50ec9d250f298bbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
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2020-05-05更新
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2卷引用:重庆市第八中学2019-2020学年高二下学期阶段性测试数学试题
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6 . 设函数
.
(1)讨论
的单调性;
(2)若
有两个极值点
和
,记过点
,
的直线的斜率为k,问:是否存在m,使得
?若存在,求出m的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d6cf2b73e153c2fccdff2fd9a841b8.png)
(1)讨论
![](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/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c671a7996f71a8db7868944e65cc6e.png)
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7 . 已知函数
,若
有两个零点
,
,则
的取值范围是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee48543647a7bbc66f3a776fde82ced3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e241cb7f9575b493fa670bfe51f4a400.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/5ceddc345bfa05b7c0c61ec02470188a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-25更新
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2卷引用:2019届重庆市高三4月(二诊)调研测试卷(康德版)文科数学试题
8 . 已知函数
,
,其中
.
(1)求
的单调区间;
(2)若存在
,使得不等式
成立,求正整数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b5932cb60b225318531f9a3762a985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737c165baced95d7095d9f918a9cc110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7fd7d9c652a1fcf87eed4e8a25debf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-06-21更新
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2卷引用:【省级联考】重庆市2019届高三高考全真模拟考试(文)数学试题
9 . 已知函数
在
处取得极值,
(1)求
的值及
的单调区间;
(2)若函数
在区间
上的最大值为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c209996c5da55e4988da354c5239fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb37d173605f006df4c51ba63b1841d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75096deb06fa2aeaace0ec13f59c9ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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3卷引用:重庆市七校2018-2019学年高二下学期期末联考(文科)数学试题
10 . 已知函数
的图象在点
处的切线与直线
垂直.
(1)判断
的零点的个数,并说明理由;
(2)证明:
对
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d8c42c314a07da5e495a1280253ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1a686b80b8f109a929f58c2de7201d.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02e32435aa5b57a34ed4a39b07c5530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
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2020-07-21更新
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