已知函数
为
上的连续可导函数,当
时,关于
,则关于
的函数
的零点的个数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b833e86c79203c1f7aa26948f2ffdac0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ebe3549a587b8fbd4a7b421898fd59c.png)
更新时间:2023-01-08 08:42:08
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【知识点】 利用导数研究函数的零点
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【推荐1】已知函数,
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(1)当k=0时,函数g(x)的零点个数为
(2)若函数g(x)恰有2个不同的零点,则实数k的取值范围为
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【推荐2】拓扑空间中满足一定条件的图象连续的函数
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,使得
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满足
,则称
为
的双重不动点.则下列函数中,①
;②
;③
具有双重不动点的函数为_______________ .(将你认为正确的函数的代号填在横线上)
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