解题方法
1 . 函数
,且存在
,使得
,若对任意
,
恒成立,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b90bfce4f9e49889a1cb26b9c8a698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6390f9e1e297895671fd3b32b19832d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7bd0db53922a4a6cd2c6b9a852c7b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4628a4bec344f42992fdf0d4fcd0e56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8573eecbc29f522671b3892ec406c50b.png)
A.1 | B.![]() | C.2 | D.3 |
您最近一年使用:0次
2023-10-01更新
|
235次组卷
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3卷引用:青海省西宁北外附属新华联外国语高级中学2022-2023学年高三上学期第三次模拟考试数学试题
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2 . 已知函数
和
有相同的极小值.
(1)求
;
(2)证明:若函数
和
共有四个不同的零点,记为
,且
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf58500af79b19c9b42737d77cf794db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868904b5d1167cd58c6f8fb74cbb9aa6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00d3e1c1ae2917f675860ccbb4959a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cdede47134ac03e2df9503b4e1abd8.png)
您最近一年使用:0次
2022-08-21更新
|
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3卷引用:青海省西宁市城西区青海湟川中学2022-2023学年高三上学期12月月考理科数学B试题
青海省西宁市城西区青海湟川中学2022-2023学年高三上学期12月月考理科数学B试题浙江省新高考研究2023届高三上学期8月测试数学试题(已下线)专题10 导数及其应用难点突破2-利用导数解决零点、交点问题-2
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解题方法
3 . 已知函数
,
.
(1)若
,证明:
;
(2)若
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877e302bb552f3b17d4428b7c48629ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495b767764be7fd47876dcebb6f51970.png)
您最近一年使用:0次
2022-06-20更新
|
665次组卷
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2卷引用:青海省2022届高三五月大联考理科数学试题