1 . 已知函数
.
(1)若函数
在
单调递减,求实数
的取值范围;
(2)若
,
是函数
的两个极值点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26802009fd436f44db553d6b1f60c2f6.png)
(1)若函数
![](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/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/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c67a34394380636fdf4b882ce28d40.png)
您最近一年使用:0次
2020-07-25更新
|
818次组卷
|
3卷引用:【南昌新东方】江西师大附中2020-2021学年高三上学期10月第一次月考数学(理)试题
(已下线)【南昌新东方】江西师大附中2020-2021学年高三上学期10月第一次月考数学(理)试题湖北省武汉市华中科技大学附属中学2022-2023学年高二下学期3月月考数学试题2020年普通高等学校招生全国统一考试伯乐马模拟考试(二)理科数学试题
解题方法
2 . 已知函数
,
,
为自然对数的底数.
(1)当
时,判断
零点个数并求出零点;
(2)若函数
存在两个不同的极值点
,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4447e8583ecf241fd3e6a1af30171ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe2115d883d13561e28006d3f6143b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60f96aa8134f93afc094e05369ae994.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](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/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
3 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
时,讨论函数
的单调性
(2)当
时,
,对任意
,都有
恒成立,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e892a8a6a8f013b0397751d89f6c8f13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7cce117124d5b3867ebdd66ebaa6e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb99b13ce4b48c02e45f66da3946d9a0.png)
您最近一年使用:0次
2020-02-21更新
|
1381次组卷
|
4卷引用:2019届湖北省宜昌市第一中学高三模拟训练(三)数学(理)试题
名校
4 . 已知函数
.
(1) 若
,求
的最小值;
(2) 若
在
上单调递增,求
的取值范围;
(3) 若
,
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2bb3e0d484860b7c9755e3807fcf29e.png)
(1) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7994bbcf39f4dda34e877b21af71f103.png)
(2) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adfb42d4a7d5ccadff768f52247131c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
您最近一年使用:0次
2019-12-19更新
|
761次组卷
|
2卷引用:湖北省黄石市大冶市第一中学2019-2020学年高三理科复读班12月月考数学试题
名校
5 . 已知函数
,
.
(1)若
存在极小值,求实数
的取值范围;
(2)设
是
的极小值点,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160602a87d2645363d45ec59bba246e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc8ecf91d5a295bd998eed6d1c64886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1148acb0b4fd538a15857fdda4f6efb4.png)
您最近一年使用:0次
2019-05-14更新
|
1862次组卷
|
6卷引用:2020届湖北省黄冈中学高三下学期2月月考数学(理)试题
6 . 已知函数
,在
处的切线方程为
.
(1)求
的值
(2)当
且
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43dddbc3af897e179102381f714e9023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a470c02b9ce962252644a6b3754f8f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/649117a986978cb811617666300b4464.png)
您最近一年使用:0次
名校
7 . 已知函数
,
.
(Ⅰ)若函数
与
的图像在点
处有相同的切线,求
的值;
(Ⅱ)当
时,
恒成立,求整数
的最大值;
(Ⅲ)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95095d102f524f9707d47d20dd0aa84b.png)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7c4adef3485e8ac6e50d1926365327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ca8398770a9a09f21a3bdd001caed12.png)
(Ⅰ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b5b017de7aec0711fef053f1a0197a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅲ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95095d102f524f9707d47d20dd0aa84b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a632b7c02157ba78348a8b59d5cc3980.png)
您最近一年使用:0次
2017-09-16更新
|
1834次组卷
|
3卷引用:湖北省襄阳四中2019-2020学年高三下学期3月月考数学(文)试题
名校
解题方法
8 . 函数
为自然对数的底数.
(1)当
时,求函数
的单调区间;
(2)①若存在实数
,满足
,求实数
的取值范围;
②若有且只有唯一整数
,满足
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43818f7ae0b5863cee85b53bbf4edbcc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)①若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②若有且只有唯一整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92755ed40510a358dcb77392749fd792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-04更新
|
1001次组卷
|
5卷引用:湖北省十堰市东风高级中学2021-2022学年高二下学期5月月考数学试题
湖北省十堰市东风高级中学2021-2022学年高二下学期5月月考数学试题2016届江苏省苏州市高三第一次模拟考试数学试卷2016届辽宁省沈阳二中高三第一次模拟考试文科数学试卷(已下线)第七章 导数与不等式能成立(有解)问题 专题一 单变量不等式能成立(有解)之参变分离法 微点1 单变量不等式能成立(有解)之参变分离法(已下线)第六章 导数与不等式恒成立问题 专题七 单变量恒成立之最值分析法 微点1 单变量恒成立之最值分析法