定义域为
的函数
,若关于
的方程
,恰有5个不同的实数解
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da3a6d011679952771607b3a166676b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fdc5e934ead4b8aee2152d7ec558b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b30dddf95b9bccc515727950491f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4ad1d8e6222a742e147d96d11ead9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85691fbcc505c27ed82f08a6a5a5d9a4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2019-01-19 08:38:20
|
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【推荐1】已知函数
,若函数
有6个零点,则
的取值范围是( )
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【推荐2】给定
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解题方法
【推荐1】已知函数
是定义在R上的偶函数,且
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时,
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![](https://img.xkw.com/dksih/QBM/2015/10/28/1572273684914176/1572273690607616/STEM/d19495a4b3d14101a056d73129a6053a.png)
![](https://img.xkw.com/dksih/QBM/2015/10/28/1572273684914176/1572273690607616/STEM/dcdd1e379e224ce79eb72cfdb962133a.png)
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【推荐2】已知函数
,若
,且
,则下列结论:①
,②
,③
,④
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3949ab6d1f944292b73f645e343225e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
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【推荐3】已知定义在
上的函数
和
都是奇函数,当
时,
,若函数
在区间
上有且仅有
个零点,则实数
的最小值为( )
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名校
【推荐1】已知函数
,若关于
的方程
有四个不同的实数解
,且
,则
的取值范围是( )
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
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【推荐2】已知
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