已知双曲线
(
,
)的左、右焦点分别为
,
,点
,
分别在双曲线
的左、右两支上,点
在
轴上,且
,
,
三点共线,若
,
,则双曲线
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5c2e64358e0ec7aa142c336d970306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2cfe2b6b927c1287cd810b04f749c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a97c698b094819ff3cc135c5735afac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.3 | D.![]() |
20-21高三上·全国·阶段练习 查看更多[4]
华大新高考联盟2020-2021学年高三上学期1月教学质量测评理科数学试题安徽省滁州市定远县复读学校2020届高三下学期第一次模拟考试理科数学试题(已下线)专题25 圆锥曲线压轴小题必刷100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)海南省华侨中学2023届高三第四次模拟考试数学试题
更新时间:2021-01-17 11:34:42
|
【知识点】 求双曲线的离心率或离心率的取值范围
相似题推荐
单选题
|
适中
(0.65)
【推荐1】数学的美无处不在,如图所示,这是某种品牌轿车的标志.在此标志中左右对称的两条黑色曲线可以近似地看成双曲线的部分图形.若左边等腰三角形的两腰所在直线是双曲线的渐近线,且等腰三角形的底约为4个单位,高约为3个单位,则双曲线的离心率为
![](https://img.xkw.com/dksih/QBM/2018/2/4/1875000172912640/1875599352791040/STEM/5807b42ff7884ff8b72e577b8f96dd4b.png?resizew=176)
![](https://img.xkw.com/dksih/QBM/2018/2/4/1875000172912640/1875599352791040/STEM/5807b42ff7884ff8b72e577b8f96dd4b.png?resizew=176)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
解题方法
【推荐2】设双曲线
的左、右焦点分别为
,
,过
的直线l分别与双曲线左、右两支交于M,N两点,且
,
,则双曲线C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b06c7553910e8ae336a518c61509ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc96c1ecab82d947c48015704e72e584.png)
A.![]() | B.3 | C.![]() | D.![]() |
您最近一年使用:0次