已知双曲线C:
,直线
与曲线C交于A,B两点(点A在点B的上方),
,点E在
轴上,且
轴,若
的内心到
轴的距离不小于
,则双曲线C离心率的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7bee900e045865453b6019a0d34964c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1539db27c4f9e7b68e52724a7da0042f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0feb20ca3bbc2782ee87935b3d3e62af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668bca530f8a7ad649887c92288b08b5.png)
2022·江西鹰潭·二模 查看更多[3]
更新时间:2022-05-12 23:12:09
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【知识点】 求双曲线的离心率或离心率的取值范围
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填空题-单空题
|
适中
(0.65)
解题方法
【推荐1】若双曲线
的右顶点
到一条渐近线的距离为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3986c87c64d3256860330f62d23bfc3a.png)
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您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐2】已知双曲线
(a>0,b>0)的左、右焦点分别为F1,F2.过点F2且斜率为
的直线与双曲线在第一象限的交点为M.若
,则此双曲线的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4486147249b5176c6c98a6847e09e8b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab626d8b112bd668f08d58f4b4720a9.png)
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