已知
、
分别是椭圆
的左、右顶点,
、
是椭圆
上关于
轴对称的两点,若直线
、
的斜率之积为
,则椭圆
的离心率是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d86ab7c97cd8a0b15ba5efc1be94230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
20-21高二下·陕西榆林·阶段练习 查看更多[4]
陕西省榆林市神木中学2020-2021学年高二下学期第二次月考文科数学试题陕西省榆林市神木中学2020-2021学年高二下学期第二次月考理科数学试题(已下线)湖南省株洲市2023届高三下学期一模数学试题变式题11-16甘肃省天水市第一中学2022-2023学年高二下学期3月月考数学试题
更新时间:2023-03-11 12:01:34
|
【知识点】 求椭圆的离心率或离心率的取值范围
相似题推荐
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐1】若椭圆
的一个焦点为F,椭圆上一点P到焦点F的最大距离是3,则椭圆的离心率为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623f870334605d1b4b92e6fc0612336c.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
【推荐2】设椭圆
的左右焦点分别为
,如果椭圆上存在点
,使![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c406c942d1cf93b68e69842743520578.png)
,则离心率![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
的取值范围________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c406c942d1cf93b68e69842743520578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095993297747968/2100017497620480/STEM/9f3a5d7d8b3f4c39be7f2ff52b382247.png?resizew=4)
您最近一年使用:0次