1 . 若椭圆
与双曲线
的焦点重合,则正实数
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996e27bd38f73ac37970225f09a9ee95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36e858bb2b512701c65e064c14f5131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知椭圆的方程为
,则它的焦点坐标为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/929070fe8b66d57fcfb19ec2b70218d3.png)
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3 . 如图曲线AB是以O为对称中心的椭圆的四分之一,A,B分别为长、短轴端点; 现只用圆规确定该椭圆的右焦点位置,步骤:以____ 为圆心以______ 为半径画弧与x轴的交点.(填序号即可)①点O;② 点A;③点B;④ OB长;⑤ OA长.
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4 . 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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2024高二·江苏·专题练习
5 . (多选题)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F为圆心的圆形轨道Ⅰ上绕月球飞行,然后在P点处变轨进入以F为一个焦点的椭圆轨道Ⅱ绕月球飞行,最后在Q点处变轨进入以F为圆心的圆形轨道Ⅲ绕月球飞行,设圆形轨道Ⅰ的半径为R,圆形轨道Ⅲ的半径为r,则( )
A.轨道Ⅱ的长轴长为![]() |
B.轨道Ⅱ的焦距为![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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6 . 已知焦点在
轴上的椭圆
的焦距大于6,则
的值可以为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b846664dd06085cd0f23cabb91ef9d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.6 | B.7 | C.![]() | D.9 |
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7 . 椭圆
的焦点
的坐标为_____ ,若
为椭圆上任意一点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53836c455d2f63d7ad643dcead96e00.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89c03d164b45b7e9d3426efa62eb33a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48932773034bb6e1651acf140d47822c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53836c455d2f63d7ad643dcead96e00.png)
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解题方法
8 . 设
,
为实数,已知经过点
的椭圆
与双曲线
有相同的焦距,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8932f1ed31c60da689945cb70362fc98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16f489ddbde5d7187e60d6db6c2f588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c8a3a2849e2f5bd29eb2e4f3fb2f74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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2024-01-04更新
|
415次组卷
|
2卷引用:江苏省泰州市联盟五校2023-2024学年高二上学期期中考试数学试卷
名校
9 . 已知
,
分别是椭圆
的上、下焦点,点
在椭圆
上,则( )
![](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/9d2c99a6a9f3dbb52e04643ad0eeafe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2023-12-21更新
|
459次组卷
|
3卷引用:四川省部分名校2023-2024学年高二上学期期中联合质量检测数学试题
解题方法
10 . 写出适合下列条件的椭圆的标准方程,
(1)焦点在
轴上,焦距为2,椭圆上的点到两焦点的距离之和为4;
(2)两个焦点在坐标轴上,且经过
和
两点;
(3)经过点
,焦点坐标分别为
;
(4)焦点在
轴上,经过点
,焦距为
.
(1)焦点在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)两个焦点在坐标轴上,且经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05215da8cba26d3a6f9bed73bad0ba83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1c0602cda79d2821c78e168b272f46c.png)
(3)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b2c62408d73dde3599f467b88f22d7b.png)
(4)焦点在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
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