1 . 已知
,函数
.
(1)讨论
在
上的单调性;
(2)已知点
.
(i)若过点Р可以作两条直线与曲线
相切,求
的取值范围;
(ii)设函数
,若曲线
上恰有三个点
使得直线
与该曲线相切于点
,写出
的取值范围(无需证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a541eb18a643831fe54cadb67b81da.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367ffd3e465f20c51eabb241d775dfa0.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11d32a6773d9324124836aa3de36f98.png)
(i)若过点Р可以作两条直线与曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78735d41a7f51aff657fa3ca3064cca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(ii)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a5e0dc63f0ba031b3189dbba6ce35f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f51f45600b3861764880a22402bc51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603789eae75bb73bbdec868fa8ee8f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97c28585cf80e2b403c8e23ac391573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-05-05更新
|
1001次组卷
|
3卷引用:吉林省长春市第二中学2022-2023学年高三下学期第七次调研测试数学试卷
2 . 已知函数
及点
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60621de20ee66e07e46f7740680068cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
A.当![]() ![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() |
您最近一年使用:0次
2023-04-20更新
|
458次组卷
|
2卷引用:吉林省白城市第一中学2023-2024学年高二下学期6月月考数学试题