名校
1 . 已知
是椭圆
和双曲线
的一个交点,
是椭圆和双曲线的公共焦点,
分别为椭圆和双曲线的离心率,
,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9903c989a39838affdceed4b6187d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56a8d89baea025863148a5b8603c7b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f994a876391534efe497dc115a53e3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7880a63a03f49be54e4fc525b268a1d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9980908225701ac795da3bd9ccc42a9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 在直角坐标平面内,已知
,
以及动点
是
的三个顶点,且
,则动点
的轨迹
的离心率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b47e7bf02b3ca16f7d96b9369e51a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31478a70beb76c9ed7d4ccaad781ae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-27更新
|
502次组卷
|
2卷引用:河南省平顶山市2019-2020学年高二上学期期末数学(理)试题
3 . (1)如图(1)所示,椭圆的中心在原点,焦点F1、F2在x轴上,A、B是椭圆的顶点,P是椭圆上一点,且PF1⊥x轴,PF2∥AB,求此椭圆的离心率;
(2)如图(2)所示,双曲线的一个焦点为F,虚轴的一个端点为B,如果直线FB与该双曲线的一条渐近线垂直,求此双曲线的离心率.
(2)如图(2)所示,双曲线的一个焦点为F,虚轴的一个端点为B,如果直线FB与该双曲线的一条渐近线垂直,求此双曲线的离心率.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/dad1328b-2bd2-44d8-9f2e-e60c11308801.png?resizew=322)
您最近一年使用:0次
2019-04-25更新
|
691次组卷
|
3卷引用:【校级联考】湖北省孝感市联考协作体2018-2019学年高二下学期期中考试数学(文)试题
名校
4 . 过原点作一条倾斜角为
的直线与椭圆
交于
、
两点,
、
为椭圆的左、右焦点,若
,且该椭圆的离心率
,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21cb908858c2f0b52e115bd80d07864f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e688995b9dba2a0c338a668a12553ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.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 . 若椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的右焦点
关于直线
的对称点在此椭圆上,则该椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6fe0f38ab3095ac6575faa02914b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685ff7987f880d4fc192527558762544.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
7 . 已知中心在原点的椭圆与双曲线有公共焦点,左、右焦点分别为
、
,且这两条曲线在第一象限的交点为
,
是以
为底边的等腰三角形,若
,椭圆与双曲线的离心率分别为
、
,则
的取值范围是( )
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0f128d08df53efd55ce7f3822991e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33558881906c228c262ff8024dcfc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120f812ad42739155a1337e7d5a7bcf7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-05-06更新
|
460次组卷
|
2卷引用:湖南省长沙市长郡中学2017-2018学年高二上学期第一次模块检测理科数学试题
名校
8 . 如图所示,
,
分别为椭圆的左,右焦点,椭圆上点
的横坐标等于右焦点的横坐标,其纵坐标等于短半轴长的
,则椭圆的离心率为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/c29095f4-b7c4-4e4b-8700-b60e3e8a3f36.png?resizew=199)
![](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/bf31876698721a199c7c53c6b320aa86.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/c29095f4-b7c4-4e4b-8700-b60e3e8a3f36.png?resizew=199)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-12-25更新
|
611次组卷
|
3卷引用:四川省南充高级中学2019-2020学年高二上学期12月月考数学(文)试题
解题方法
9 . 由半椭圆
与半椭圆
合成的曲线称作“果圆”,如图所示,其中
,
.由右椭圆
的焦点
和左椭圆
的焦点
,
确定
叫做“果圆”的焦点三角形,若“果圆”的焦点为直角三角形.则右椭圆
的离心率为( )
![](https://img.xkw.com/dksih/QBM/2020/4/8/2436970073800704/2437259335106560/STEM/06489242-d1df-4f22-afe8-52dfd0743e42.jpg?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13068aa6d4e3a155d14a2bfd7ab413e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1173f3888e73861665d62df65ee00510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671241e869118e81afc8cc427d24fe22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497d269c30eec393e3f0e877ddbe2983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13068aa6d4e3a155d14a2bfd7ab413e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b519e5794ef9932b64715619adf860db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1173f3888e73861665d62df65ee00510.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/88c2bfe459cac775a7b0d09b612de84f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13068aa6d4e3a155d14a2bfd7ab413e5.png)
![](https://img.xkw.com/dksih/QBM/2020/4/8/2436970073800704/2437259335106560/STEM/06489242-d1df-4f22-afe8-52dfd0743e42.jpg?resizew=189)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 如图,离心率为2的双曲线
与椭圆
有共同的焦点
,
分别是
,
在第一、三象限的交点,若四边形
是矩形,则椭圆
的离心率为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/ee136d79-b75e-46dc-899a-6419be84ea85.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9cdcc25290844c9d4c088bf58afada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bb9c075a320b0fe23145061b1fb0f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/ee136d79-b75e-46dc-899a-6419be84ea85.png?resizew=188)
A.![]() | B.![]() | C.![]() | D.![]() |
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