22-23高三下·北京海淀·开学考试
名校
1 . 已知函数
,有下列四个结论:①设函数
的极大值点和极小值点分别为
和
,则
;②若
,函数
的极大值和极小值分别为
和
,则
;③存在实数
,对任意的实数
,函数
都恰有两个零点;④若方程
有4个实根,从小到大记为
,则
.全部正确命题的序号为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ea2b5232f657b22cfb929ef8f9aaaa.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5dd61c610ec4b911b744912240d860.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5809a06357f94fc7a2156c7e7af1ed2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0127d96bc333e309ce75e6a3b327b256.png)
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