名校
1 . 已知函数
.
(1)若
,请直接写出函数
的零点的个数;
(2)若
,求证:函数
存在极小值;
(3)若对任意的实数
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dee7c205af7e05b19e7e466b649cdb2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若对任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c164755dc2d7cff80fb4c9cffc9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5967cc62862986840af4dd29df4bcc41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-06-14更新
|
467次组卷
|
2卷引用:北京市海淀区首都师范大学附属中学2022-2023学年高二下学期期中练习数学试题
名校
解题方法
2 . 已知
.
(1)在下面的三个条件中,选择一个,使得
在
上单调递减,并证明你的结论.①
;②
;③
.
(2)若对任意
,
恒成立,求实数a的取值范围;
(3)若
有最小值,请直接给出实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8b20cf5ee600f27c4d57941f902e41.png)
(1)在下面的三个条件中,选择一个,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8e1dd8da540badcb9a8f427c5b202e.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
解题方法
3 . 已知
.
(1)当
时,求函数
在点
处的切线方程;
(2)求证:
;
(3)若
在
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029bffc59afbce5c65d95e4faeb59823.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f755768934777564e046273849e4234e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
4 . 已知函数
.
(1)求
在点
处的切线方程;
(2)求证:当
时,
.
(3)若
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b1d897bf1170f96cac0c36823a512a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173f99d0a0cf852179fe8cf28d7c5332.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0616c29e392039cf12339c78cf26b7d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-04-04更新
|
904次组卷
|
2卷引用:北京市第五十五中学2022-2023年高二下学期3月调研数学试题
名校
5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c539c697db3a96dee51fbeeff3d1fee3.png)
(1)当
时,求证
恒成立:
(2)讨论
的单调性:
(3)当
时,求证:
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c539c697db3a96dee51fbeeff3d1fee3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc4b2195a888cbdace278d58a3c796a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/775561c0369b5afa7218668413ac6e93.png)
您最近一年使用:0次
名校
解题方法
6 . 已知函数
,
.
(1)若曲线
在点
处的切线平行于直线
,求该切线方程
(2)若
,求证:当
时,
;
(3)若
的极小值为
,求a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f21a00d2420f3f15e6438ada74ff2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
您最近一年使用:0次
7 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)讨论函数
的单调性;
(3)请写出一个实数
的值,使得对任意的
恒成立.(结论不要求证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c539c697db3a96dee51fbeeff3d1fee3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)请写出一个实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65226baa03360f3e19a0902dfbad2e19.png)
您最近一年使用:0次
2023-02-19更新
|
501次组卷
|
2卷引用:北京市首都师范大学附属丽泽中学2023届高三下学期2月月考数学试题
8 . 已知函数
.
(1)求
的单调区间;
(2)若
对
恒成立,求a的取值范围;
(3)证明:若
在区间
上存在唯一零点
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038e9d57cedce08cfd8f84e8b8e8f51a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(3)证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db59df375de5b16c75c71675f743b15d.png)
您最近一年使用:0次
2023-03-27更新
|
2144次组卷
|
9卷引用:北京市朝阳区2023届高三一模数学试题
9 . 已知函数
.
(1)当
时,求
的单调区间;
(2)若
对
恒成立,求a的取值范围;
(3)证明:若
在区间
上存在唯一零点
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50253ce363ee475b4281bd781cbec441.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(3)证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db59df375de5b16c75c71675f743b15d.png)
您最近一年使用:0次
名校
解题方法
10 . 已知函数
.
(1)若不等式
在
上恒成立,求实数a的取值范围;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1eb6713f45458fd1b47b9fa64ea0157.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eba41c708a8c48e40f54b619eb5cb02.png)
您最近一年使用:0次
2023-03-10更新
|
1220次组卷
|
7卷引用:北京市第五十七中学2022-2023学年高二下学期3月月考数学试题
北京市第五十七中学2022-2023学年高二下学期3月月考数学试题山西省部分学校2023届高三下学期质量检测试题湖北省新高考联考协作体2022-2023学年高三下学期4月月考数学试题安徽省江南十校2022-2023学年高二下学期5月联考数学模拟试题(已下线)拓展十:利用导数研究不等式恒(能)成立问题5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)(已下线)专题2 导数(5)(已下线)模块一 专题5 导数及其应用 2 (北师大2019版)