1 . 已知函数
的图象在点
处的切线的斜率为2.
(1)求实数
的值;
(2)设
,讨论
的单调性;
(3)已知
且
,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0df3b67473c26deb804dd557de5c01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3daee1aa811ae2ea0b891792436b74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38b6286e5f74b604b9fb639c55d611f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb993b720fccaed91435fc8b2272e85b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759f6a835532b85247480eb403629a44.png)
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2016-12-03更新
|
605次组卷
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2卷引用:2015届湖南省浏阳、醴陵、攸县三校高三联考理科数学试卷
10-11高二下·云南红河·阶段练习
名校
2 . 已知函数f(x)=ln(x+1)-x.
⑴求函数f(x)的单调递减区间;
⑵若
,证明:
.
⑴求函数f(x)的单调递减区间;
⑵若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc3e5be1796493161a4df7e28a6f6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0cf3703d9267731e5e22e070edf696.png)
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3 . 已知函数
,
.
(1)当
时,求
的单调区间;
(2)当
时,记
的极小值点为
,证明:
存在唯一零点
,且
.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f385b23c5ed85f350ffa395cd860f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](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/e2ffc0733cb65fb25e9096618fff3348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697572b42c40f498ed398099c659df1f.png)
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2024-04-03更新
|
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解题方法
4 . 已知函数
.
(1)若关于
的不等式
恒成立,求
的取值范围;
(2)若
,
是
的两个极值点,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac860233fe47f896c65baee8618f65e7.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bddbeb72add81efd8c7f548a16b02b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370a1cb12f919052d2a66a552d6308ca.png)
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2022-07-10更新
|
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3卷引用:湖南省衡阳市部分学校2021-2022学年高二下学期期末联考数学试题
名校
5 . 已知函数
,
.
(1)设
,讨论函数
的单调性;
(2)若
,证明:
在
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d70266454df40256268b19b055a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c18abed8880e8ae60cae0c1a1719c75.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009935dae2483304749bfa46ceb6eecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f88a76f947e7022ef0c5efd6db060c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
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2019-06-12更新
|
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名校
6 . 已知函数
(其中
).
(1)讨论
的单调性;
(2)若
有两个极值点
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3588bff7e25f917ed8c670c82fc460f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff60eab72de85437e12806474281612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82de0bf7bf952aaef76ee2c2ecbe3bf.png)
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2018-02-11更新
|
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2013·江西南昌·二模
7 . 已知函数
(其中
为常数).
(1)当
时,求函数
的单调区间;
(2)当
时,设函数
的3个极值点为
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd66af470ac903f1e4add0a2748478b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e059c431cb970c41b39ac331ac2445.png)
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2017-03-01更新
|
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8卷引用:2016届湖南省长沙市雅礼中学高三月考三理科数学试卷
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