已知函数
,若方程
有8个相异实根,则实数b的取范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8dbadb1feea4be35f248b0756672fe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6aa5b4804a96e610f3004d7159b978c.png)
更新时间:2021-11-27 10:14:08
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适中
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解题方法
【推荐1】设函数
的定义域为
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解题方法
【推荐2】函数
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【推荐3】函数
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