1 . 已知函数
.
(1)求
的单调区间和最值;
(2)已知函数
,若
在区间
内有两个极值点
,
.
(ⅰ)求实数a的取值范围;
(ⅱ)从下面两个不等式中任选一个进行证明.
①
;
②
.
注:如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20f832421dcfb1ec8311931210a83931.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e241cef07a61a4aae88c6d11c478e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(ⅰ)求实数a的取值范围;
(ⅱ)从下面两个不等式中任选一个进行证明.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a0b39ed179340810fea23d244406ce.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98c62767b8ed71a6e0209a3652429cc.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
2 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf255b913e8b08681dda42380e03115.png)
(1)
,
,求实数
,
的值;
(2)利用
,证明:当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a70580f34db8f1b309287195c5ac7e7.png)
(3)证明:若
,其中
,
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8509c6684cb06366f3a1b9e391a3d7df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf255b913e8b08681dda42380e03115.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860c8bee8ca79c135861311fa4fddb0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b7c973fd05c6dbfef9adf37040c53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)利用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9098338d53471dd9041390613b25171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a70580f34db8f1b309287195c5ac7e7.png)
(3)证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1020297598b474821bdbb8a33de986e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc69868d5be72f71f9aa2099c84e1e61.png)
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名校
解题方法
3 . 已知函数
,
.
(1)若
恒成立,求
的取值范围;
(2)设正实数
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31653b694d425c914bd6d0242014bc93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7670449b27702bf62d251c6bed5d05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b5890bd5a8fe2650ffbdda74c2ce65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcce89b0004d6a21cb188e71abb965c5.png)
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2024-01-03更新
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4卷引用:辽宁省营口市大石桥市高级中学2024届高三上学期12月质量检测数学试题
解题方法
4 . 已知函数
, 且
.
(1)求a;
(2)证明:
存在唯一的极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15daa5c631037d25842e4177f1fa1bf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(1)求a;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe043d52b8e5898dc5e67ac6a92638a.png)
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名校
解题方法
5 . 已知定义域均为
的两个函数
,
.
(1)若函数
,且
在
处的切线与
轴平行,求
的值;
(2)若函数
,讨论函数
的单调性和极值;
(3)设
,
是两个不相等的正数,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/428d922e63d8a0838da6fdacee919ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2adbf5920ef591644eaa616ccac1e9c3.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/974afe1dbd93c458e63daa7564a462ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a94ad3ba506860f8491ae7d7d67e8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0644fb6750e5c61c2d334b1b0094cbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e8f67fafa098c0e1b1c9394859d4cd0.png)
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2023-05-21更新
|
1144次组卷
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5卷引用:辽宁省六校协作体2022-2023学年高二下学期6月联合考试数学试题
辽宁省六校协作体2022-2023学年高二下学期6月联合考试数学试题天津市滨海新区2023届高三三模数学试题(已下线)专题19 导数综合-1天津市北师大静海附属学校2024届高三上学期第三次月考数学试题(已下线)专题12 帕德逼近与不等式证明【练】
名校
解题方法
6 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06678b48ba1d12f0748bbed1a9d27478.png)
(1)若
,证明:
;
(2)设
,若
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06678b48ba1d12f0748bbed1a9d27478.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62b74522d84abe0dc4d5983694ea748.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1411c719bc69f11b60e566baa09f383c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4fe5e35859136dafc3373c01009f24.png)
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2023-09-29更新
|
2056次组卷
|
4卷引用:辽宁省沈阳市东北育才学校2024届高三第三次模拟考试数学试题
辽宁省沈阳市东北育才学校2024届高三第三次模拟考试数学试题湖北省武汉市华中师范大学第一附属中学2023届高三5月适应性考试数学试题(已下线)第六章 导数与不等式恒成立问题 专题六 单变量恒成立之参变分离法 微点4 单变量恒成立之同构或放缩后参变分离综合训练吉林省松原市前郭尔罗斯蒙古族自治县第五高级中学2023-2024学年高三上学期10月月考数学试题
名校
解题方法
7 . 已知函数
,且
.
(1)求实数
的取值范围;
(2)设
为整数,且对任意正整数
,不等式
恒成立,求
的最小值;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0097e221a2fd7333fb0d47e86546ba61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2b790c0ffe766b815ea769920bf5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac9ea10cc95de77e1a0ad091359e590.png)
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2023-05-14更新
|
647次组卷
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4卷引用:辽宁省六校2023-2024学年高三上学期期初考试数学试题
解题方法
8 . 已知函数
.
(1)讨论
的单调性;
(2)设函数
,P,Q是曲线
上的不同两点,直线
的斜率为
,曲线
在点处P,Q切线的斜率分别为
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075d11d43923c87d454970e2d8196c7.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d42954dde2afc93483eff1709acf0b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4ca086fca586da964c007788de45cc.png)
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名校
解题方法
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60764ef6f5ad1c7cb846f5db232ef81e.png)
(1)若
恒成立,求实数
的取值范围;
(2)设
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60764ef6f5ad1c7cb846f5db232ef81e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e5d1c43ff1d97fe6f5283293da306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2771c5f04582c545e0f9afc8a2cb9597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7cb70acf7d1aa845004f55838b4c94.png)
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2022-12-22更新
|
904次组卷
|
4卷引用:辽宁省沈阳市东北育才学校2023届高三高考适应性测试(二)数学试题
辽宁省沈阳市东北育才学校2023届高三高考适应性测试(二)数学试题广东省部分学校2023届高三上学期12月大联考数学试题(已下线)河北省石家庄市2023届高三质量检测(一)数学试题变式题17-22福建省泉州第五中学2022-2023学年高二下学期第二次临考数学仿真模拟试题(B)
10 . 已知
,函数
.
(1)过原点
作曲线
的切线,求切线的方程;
(2)证明:当
或
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86294c2fde8f3e02b27a2ca7c85965b.png)
(1)过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/110a4630049f9970b02216728bba4e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf5603f98fb25197ce8e52723d0979a.png)
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2023-04-29更新
|
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4卷引用:辽宁省抚顺市重点高中六校协作体2022-2023学年高二下学期期中考试数学试题
辽宁省抚顺市重点高中六校协作体2022-2023学年高二下学期期中考试数学试题河南省新乡市2023届高三第三次模拟考试理科数学试题河南省新乡市2023届高三第三次模拟考试文科数学试题(已下线)2024年全国高考名校名师联席命制数学(理)信息卷(十二)