已知函数
,
,
时,方程
有三个实数根,则
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260c5caf6cb1a1c169abc003fbda71c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8632475f5851ff5b32667caa167c7f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d4a4d94615e427e4e78061000d5e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
更新时间:2020-02-23 15:00:38
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【知识点】 利用导数研究方程的根
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适中
(0.65)
【推荐1】已知
,则下列正确的为_________ .
①曲线
在
处的切线平行于
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的单调递减区间为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e1fcca51be2f5fea9bb06d0146fa50.png)
③
的极小值为
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③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da56e8ee8614b1a2f0d88dbd8dec098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8b002680c476b8323c4b67e8bc999e.png)
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填空题-单空题
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名校
【推荐2】若方程
有三个不同实根,则实数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fdeaedb708ff87bf4e4830d2147d815.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次