解题方法
1 . 已知函数
,给出下列命题:
①
,都有
成立;②存在常数
,
恒有
成立;
③
的最大值为
;④
在
上是增函数.
以上命题中正确的为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725f78d26ce894dd6503ffd0f307959.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1db6c94b94afc372212a81cc1f4dd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eecacbdc5c2a7e7ac00daea8c448098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7c7b4934410a1727fe7024a6bd740f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738bc12c4d44438814ce6f606fda695a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a2691d6c11316950432599c204c9a0.png)
以上命题中正确的为
您最近一年使用:0次
2020-10-24更新
|
628次组卷
|
2卷引用:湖北省恩施州利川市第五中学2020-2021学年高三上学期期中数学试题