1 . 在平面直角坐标系
中,椭圆
的左,右焦点分别为
,椭圆
的弦
与
分别平行于
轴与
轴,且相交于点
.已知线段
的长分别为
,则
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fcb20a6972108871adbf284f9e5006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d4aa43f4bf9ade4a8fba4e4a29e924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c28f88812282308b664d3bfc276150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffdc208786577c5c51e9ecfb6a8ce2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
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2 . 已知结论:椭圆的面积为
.如图,一个平面
斜截一个足够高的圆柱,与圆柱侧面相交的图形为椭圆
.若圆柱底面圆半径为
,平面
与圆柱底面所成的锐二面角大小为
,则下列对椭圆
的描述中,错误的是( )
A.短轴为![]() ![]() | B.离心率为![]() ![]() |
C.焦距为![]() | D.面积为![]() |
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3 . 如图所示,“嫦娥五号”月球探测器飞行到月球附近时,首先在以月球球心
为圆心的圆形轨道I上绕月球飞行,然后在
点处变轨进入以
为一个焦点的椭圆轨道II绕月球飞行,最后在
点处变轨进入以
为圆心的圆形轨道III绕月球飞行,设圆形轨道I的半径为
,圆形轨道III的半径为
,则下列结论中正确的序号为( )
①轨道II的焦距为
;
②若
不变,
越大,轨道II的短轴长越小;
③轨道II的长轴长为
;
④若
不变,
越大,轨道II的离心率越大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/bf390483-8d10-4d4b-b4d2-3da8de603ba6.png?resizew=165)
①轨道II的焦距为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24b17abed6bcba3dbbae7471a707293.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
③轨道II的长轴长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44680e496a811023a830d7e9671b2b45.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
A.①②③ | B.①②④ | C.①③④ | D.②③④ |
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4卷引用:2.2.2 椭圆的性质(十八大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)2.2.2 椭圆的性质(十八大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)内蒙古锡林郭勒盟2024届高三上学期第二次统一考试(12月月考)(全国乙卷)理科数学试题内蒙古锡林郭勒盟2024届高三上学期第二次统一考试(12月月考)(全国乙卷)文科数学试题(已下线)专题11椭圆(3个知识点7个拓展2个突破7种题型2个易错点)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(人教A版2019选修第一册)
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解题方法
4 . 椭圆
中,点
为左顶点,点
为上顶点,直线
过原点且与椭圆交于
,
两点(
在第一象限),则四边形
的面积最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4402aeb853b22f20992156957ef0fd.png)
![](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/0f85fca60a11e1af2bf50138d0e3fe62.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02b1139e07e431b5d4276757b232bad.png)
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5 . 以椭圆
的焦点为顶点、椭圆的顶点为焦点的双曲线的标准方程是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
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6 . 已知
是椭圆
的左顶点,
是椭圆上不同的两点.
(1)求椭圆
的焦距和离心率;
(2)设
,若
,且
、
、
和
、
、
分别共线,求证:
三点共线;
(3)若
是椭圆
上的点,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4402aeb853b22f20992156957ef0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/006b6c6b0dfe51fecefaf968caa76a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fdba6247e0c463c1ba25fba6b729c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37434d74d75a9d6d5180670d76f98c7.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db9b682ff883411d3cffe30f929c2683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a84ca43baf937e49a9d06b1567ece94.png)
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7 . 已知抛物线
的焦点
与
的一个焦点重合,过焦点
的直线与
交于
,
两不同点,抛物线
在
,
两点处的切线相交于点
,且
的横坐标为4,则弦长
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ec62b64f29dd67cf61392f8741383f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adcea43246b86730e37244c3f1425fc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/7f9e8449aad35c5d840a3395ea86df6d.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
A.16 | B.26 | C.14 | D.24 |
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5卷引用:上海市南洋模范中学2023届高三三模数学试题
上海市南洋模范中学2023届高三三模数学试题(已下线)第07讲 抛物线及其性质(六大题型)(讲义)(已下线)专题14 抛物线-1(已下线)第4讲: 圆锥曲线几何性质【练】江苏省射阳中学2023-2024学年高二下学期阶段测试2(5月)数学试题
解题方法
8 . 已知椭圆
的左右焦点分别为
、
,点
是椭圆的一个顶点,
是等腰直角三角形.
(1)求椭圆
的方程;
(2)写出椭圆
的长轴长;短轴长;焦距;离心率
(3)求直线
被椭圆
截得的弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/b25ce60648ea5042ab5eb5702efe651a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f9a699aededce0ad803bf8257fbbcb.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)写出椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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9 . 已知椭圆
,焦点
,
.若过
的直线和圆
相切,与椭圆的第一象限交于点
,且
轴,则该直线的斜率是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6dc791ae552024ea0df7905bf190f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aded2ade7ac5f0196027f489e87dab09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfcba872e4bfa79d4681952eda26b2fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0803835d6f594a60bd16c823e3ad2cd6.png)
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3卷引用:上海市嘉定区第一中学2021-2022学年高二下学期期末数学试题
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10 . 曲线
与
的关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b747db7eaf469c6d1607e4b0d028299f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c876e95a9cda5f8cabe47244352b5b.png)
A.有相等的焦距,相同的焦点 | B.有不等的焦距,相同的焦点 |
C.有不等的焦距,不同的焦点 | D.有相等的焦距,不同的焦点 |
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5卷引用:2.2.1 椭圆的标准方程(十三大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)2.2.1 椭圆的标准方程(十三大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)天津市耀华中学2022-2023学年高二上学期期中数学试题(已下线)第19讲 椭圆及其标准方程7种常见考法归类(2)(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)(已下线)3.1.1 椭圆的标准方程(1)