1 . 设
为曲线
:
上一点,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b0073fed28fd0caeade3216a5a5b2a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7349696cf14aca140c1e74603caf66a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4c1016bf87b416cff0f3fa79d3ef9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513eafd10fa1ec0196562865517e0b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216fecd4e03907236a368d8a70d919a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b0073fed28fd0caeade3216a5a5b2a.png)
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2 . 已知椭圆
的左、右焦点分别为
,点
是椭圆上一点,若
的内心为
,连接PM并延长交
轴于点
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf8c07d4532162887f4a9787f365280.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d98da0e2532648a4435045ae73de2a.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/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf8c07d4532162887f4a9787f365280.png)
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3 . 椭圆
上的一点到两个焦点的距离之和为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c749a317ae1917344ee16797635c0f76.png)
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4 . 如图所示,已知椭圆
的左右焦点分别为
,点
在
上,点
在
轴上,
,则
的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b0dadb875cccce870b69409a476606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea68f65429501ec4986bef9cce8dff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ade9ff1a02f622b86b36ffadfbfaae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/d4d339ca-022c-40ed-a36d-740d028ccdd3.png?resizew=170)
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2024-03-27更新
|
796次组卷
|
3卷引用:陕西省西安市第一中学2024届高三第十次模拟考试数学(文)试题
5 . 若
为椭圆
上一点,
,
为
的两个焦点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1565358ed95afa71757c1d7d1fd2ea.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ea0965aa6af30c1d18f8503ba085a6.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1accaa97c379475f35e61f30d3b64fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1565358ed95afa71757c1d7d1fd2ea.png)
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解题方法
6 . 已知椭圆
:
的左,右焦点分别为
,
,
为坐标原点,若以
为直径的圆与椭圆
在第一象限交于点
,且
是等边三角形,则椭圆
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e8df70d56fe97837cdfb0cf5de3fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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7 . 如图,已知椭圆
的离心率为
,左顶点是
,左、右焦点分别是
是
在第一象限内的一点,直线
与
的另一个交点为
.若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183b6a0cef4256c9696a5bca31053da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
,则直线
的斜率__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c56a64d6514ff711cfdf901949c253c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b67528f875a6d4bac8bbf784f7b66a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183b6a0cef4256c9696a5bca31053da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/e5299bd5-c090-4a33-97f3-0597e711fa6c.png?resizew=172)
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8 . 椭圆
的左右焦点分别为
,点
在椭圆上,且
,则
的面积是__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e78f1a9cc4dedc05c175ab99b288b9f.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/7285470bf401f5edaac641234ee6ff6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
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2023-12-10更新
|
1390次组卷
|
6卷引用:陕西省渭南市渭南中学2023-2024学年高二上学期期末质量调研数学试题
陕西省渭南市渭南中学2023-2024学年高二上学期期末质量调研数学试题陕西省延安市富县高级中学2021-2022学年高二上学期期末文科数学试题沪教版(2020) 选修第一册 高效课堂 第二章 2.2 椭圆(3)(已下线)3.1.1 椭圆及其标准方程(精练)-2023-2024学年高二数学《一隅三反》系列(人教A版2019选择性必修第一册)江西省上饶市上饶中学2024届高三上学期12月月考数学试题(已下线)第01讲 3.1椭圆(12大题型训练,含焦点三角形、离心率等题)-【练透核心考点】2023-2024学年高二数学上学期重点题型方法与技巧(人教A版2019选择性必修第一册)
名校
解题方法
9 . 已知焦点为
,
的椭圆的方程为
,且
,过椭圆左焦点
的直线交椭圆于
两点,则
的周长为________ .
![](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/bde7312e22ee74cef2d70bc9de2bf6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bcba03fa0b41ed120058ba9eaed0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
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2023-11-27更新
|
400次组卷
|
2卷引用:陕西省西安市西安南开高级中学2023-2024学年高二上学期期末考试数学试题
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10 . 已知椭圆
的焦点分别
、
,点A为椭圆C的上顶点,直线
,与椭圆C的另一个交点为B.若
,则椭圆C的方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ef1ff0b6addca3494d762c7602c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88b318fd3b68f7097a6ee94eb398ea7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/119cf0283ed036e40b1e0cce24150637.png)
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2022-06-30更新
|
999次组卷
|
9卷引用:陕西省西安市阎良区教育局2023-2024学年高二上学期期末质量检测数学试卷
陕西省西安市阎良区教育局2023-2024学年高二上学期期末质量检测数学试卷辽宁省本溪市第一中学2023-2024学年高二上学期综合检测数学试题上海市虹口高级中学2021-2022学年高二下学期期末数学试题(已下线)第三章 圆锥曲线的方程(A卷·知识通关练)(1)(已下线)专题19 圆锥曲线 (练习)-1(已下线)2.2椭圆(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020选修第一册)黑龙江省双鸭山市友谊县高级中学2022-2023学年高二上学期期末考试数学试题(已下线)核心考点03椭圆与双曲线(1)重庆市铁路中学2023-2024学年高二上学期期中数学试题