若实数
满足
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d10449bc77d692a7270e0f20a68cdf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8c68781247ec5529347ab605b89c3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b4e90d2fc0050c581be0018d58136d.png)
16-17高三下·河南信阳·阶段练习 查看更多[3]
2017届河南省息县第一高级中学高三下学期第三次阶段测试数学(理)试卷山东省淄博市部分学校2018-2019学年高二下学期期末考试数学试题(已下线)专题3-5 超难压轴小题:导数和函数归类(2)-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)
更新时间:2017-04-08 18:09:04
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【知识点】 导数的几何意义
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【推荐1】已知直线
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两点.过
两点分别作
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__________ ;
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【推荐2】定义:过曲线上的某一点向曲线的凹侧作与曲线相切的圆,当该圆的半径最大时,该圆的半径称为曲线在该点处的曲率半径.则下列说法正确的有__________ .
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②曲线
在点
处的曲率半径最小;
③若椭圆
在上顶点处的曲率半径与在右顶点处的曲率半径之比为8,则该椭圆的离心率为
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②曲线
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
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