1 . 已知
,
.
(Ⅰ)讨论函数
的单调性;
(Ⅱ)记
表示m,n中的最大值,若
,且函数
恰有三个零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b13c3f572d0ee6cfbe0065a79f1c34.png)
(Ⅰ)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(Ⅱ)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1bfb9487f824ff9fd2a1a281f8d62f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d29332c52dd44fb222eb24db91bbe17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4133958c09fdd82cda8838c9cf46ccda.png)
您最近一年使用:0次
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2 . 已知函数
,且
.
(1)判断函数
的单调性;
(2)若方程
有两个根为
,
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e6bb62db27fd707e34733b7bb085b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0e3db473a2eac948ddd3b1f9408e10.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c701c5c07f7c584aadd218d9e341d3ac.png)
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2019-10-12更新
|
648次组卷
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3卷引用:2019年贵州省铜仁市第一中学高三上学期第二次模拟考试数学试题(理科)
2019年贵州省铜仁市第一中学高三上学期第二次模拟考试数学试题(理科)2020届贵州省铜仁第一中学高三上学期第二次模拟数学(理)试题(已下线)2020届高三12月第01期(考点03)(理科)-《新题速递·数学》
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3 . 已知
时,函数
有极值
.
(1)求实数
的值;
(2)若方程
恰有
个实数根,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aabece92ac07dfd091d8cb08bf94cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce90064385c4633056784c1ae375a2d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2019-07-08更新
|
1177次组卷
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4卷引用:2020届贵州省铜仁第一中学高三上学期第二次模拟数学(文)试题
2020届贵州省铜仁第一中学高三上学期第二次模拟数学(文)试题2019年贵州省铜仁市第一中学高三上学期第二次模拟考试数学试题(文科)2019年四川省三台中学实验学校高二3月月考数学(文)试题(已下线)江西省南昌市2019-2020学年进贤二中高二下学期第一次月考数学(理)试题
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4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a739484281abaf9092fd6fc534b352d.png)
.
(I)求
在其定义域上单调区间;
(II)若
,都有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a739484281abaf9092fd6fc534b352d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0727421be959f84259e666afc3bec2.png)
(I)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(II)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec8b416d1cbe52e1b1b4f8acf82e092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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5 . 已知函数
,
,若对
,
,使
成立,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999d95697122b5946a74ccf19456954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd85b8691f4c2335f2b7e6b268d946c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10eff40a2b814c72dcb07e93120e69e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0abd009b97a996b283d67ff53fefa024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e63bbadc6250f7139836ede33205550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-04-01更新
|
2017次组卷
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4卷引用:贵州省凯里市第一中学2019届高三下学期模拟考试《黄金卷二》数学(文)试题
名校
6 . 已知
,
,且
,
,
恒成立,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7197810e17081ad389c52b4d278da67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6422d979eaaafd4e182de13a47813cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998300a677c3f657523a4071def9135a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-01-18更新
|
1154次组卷
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2卷引用:【校级联考】贵州省贵阳第一中学、云南师大附中、广西南宁三中2019届高三“3 3 3”高考备考诊断联考数学(理)试题
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7 . 已知函数
,
为实数.
(1)当
时,求
的单调递增区间;
(2)如果对任意
,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20eb83f05322a99d5d2942e1fb8d9942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)如果对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae47b6ff942035b05bad9ea569533bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . 已知
.
(1)若
,求
的取值范围;
(2)若
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d2a6b211813154d368fe66c5cb4ee6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7847abd5a830ff448f260b5107ac52.png)
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2018-12-11更新
|
1524次组卷
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2卷引用:【全国百强校】贵州省遵义航天高级中学2019届高三第四次模拟考试数学(理)试题
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解题方法
9 . 已知函数
,设其极大值点为
.
(1)求
及
的最大值;
(2)求证:曲线
在
上存在斜率为
的切线,且切点的纵坐标
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f8f547f53c5c19ce5eb6b60f218c7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107401c21294f4ffae8be631f0f737fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678501d48f66b3e2f41e1c097b3e5740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b9e2c9f47b51b5cca14d52e93ef9e1.png)
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