1 . 已知函数
,若函数
在定义域上有两个极值点
,
,而且
.
(1)求实数
的取值范围;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9fa1963baa02f267e110c06cfa35e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68964a9d8207baab9a944f394d741f6e.png)
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2019-03-10更新
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5卷引用:【校级联考】陕西省汉中市重点中学2019届高三下学期3月联考数学(理)试题
【校级联考】陕西省汉中市重点中学2019届高三下学期3月联考数学(理)试题【省级联考】山西省2019届高三百日冲刺考试数学(理)试题【市级联考】河南省新乡市2019届高三3月份质量检测数学(理)试题内蒙古呼和浩特市2019-2020学年高三上学期质量普查调研考试数学(理)试题(已下线)拓展七:导数双变量问题的7种考法总结-【帮课堂】2022-2023学年高二数学同步精品讲义(人教A版2019选择性必修第二册)
2 . 已知函数
.
(1)讨论
在
上的单调性;
(2)若函数
有两个极值点
,
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7455d9ef12f06a4f2d1676c433ccb70.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e111595ac59e1fb558b6a465a02829.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/c2644d21521ebf09edcd8ec438202610.png)
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名校
3 . 已知函数
.
(1)求函数
的单调区间;
(2)记函数
的极值点为
,若
,且
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae9174bb27aac8686e477710499639b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2037b0bad7c7a312bac1ac0653d9a491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954d9607a68c1f02b38be33a17a3530c.png)
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2018-05-09更新
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【全国市级联考】河北省石家庄市2018届高中毕业班模拟考试(二)数学(文)试题(已下线)2019年一轮复习讲练测【新课标版文】3.3导数的综合应用【讲】【全国百强校】山东省济南外国语学校2019届高三上学期高考模拟(二)数学(文)试题
名校
4 . 已知函数
(
,
),且对任意
,都有
.
(Ⅰ)用含
的表达式表示
;
(Ⅱ)若
存在两个极值点
,
,且
,求出
的取值范围,并证明
;
(Ⅲ)在(Ⅱ)的条件下,判断
零点的个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d16eff6f9157fc0915a32cff0eeb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa63b622d7f95f24dab27f977fcb042.png)
(Ⅰ)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bc188ba95c4a4f9322e0a464bf6bef.png)
(Ⅲ)在(Ⅱ)的条件下,判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
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2017-05-10更新
|
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|
4卷引用:2015届广东省深圳市高三第二次调研考试文科数学试卷
5 . 已知函数
存在两个极值点.
(Ⅰ)求实数a的取值范围;
(Ⅱ)设
和
分别是
的两个极值点且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2b2c94fca3305ceea3b778ec81990d.png)
(Ⅰ)求实数a的取值范围;
(Ⅱ)设
![](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/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4900c67f4b57fa430c4bd863f8e896.png)
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|
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