名校
1 . 已知中心在原点,焦点在
轴上的椭圆与双曲线有公共焦点,左、右焦点分别为
,
,且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/81dea63b8ce3e51adf66cf7b9982a248.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3cc27780319782f383283a1e9b3bab.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/e823c9dc0a061db27040ac59fc4ef2d1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-09更新
|
456次组卷
|
2卷引用:河北省保定市2019-2020学年高二上学期期末数学试题
名校
2 . 设椭圆C:
的左焦点为F,上顶点为A,过点A与AF垂直的直线分别交椭圆C与x轴正半轴于点P、Q,且
, 椭圆C的离心率为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea42d0e090fd7bfd4ca6bd3a4297a1ac.png)
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名校
3 . 已知
,
是椭圆
:
的左、右焦点,点
在椭圆
上,
与
轴垂直,
,则椭圆
的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82fe25db889399bb3ca4ffd5dd5db84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61d572ecf27dc02fcbd588f24647b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c63dd5f3379e6bdeb875e7d2b11509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb18e1eba5438e88d2c7962b3bd7b41b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f130063e09507648ea1e531354157f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-01-20更新
|
563次组卷
|
2卷引用:【市级联考】甘肃省张掖市2018-2019学年高二上学期期末联考文科数学试题
名校
4 . 已知椭圆
,点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bacfc149ede71417fa599c21b5a84cb8.png)
(Ⅰ)求椭圆
的短轴长和离心率;
(Ⅱ)过
的直线
与椭圆
相交于两点
,设
的中点为
,判断
与
的大小,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3995288b1519ab38e1b412d91dc8fb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bacfc149ede71417fa599c21b5a84cb8.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f6816548e716a864e088c962cec576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4066dc453c2e3fa4b08023f76229e0a7.png)
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2018-01-19更新
|
650次组卷
|
6卷引用:【全国百强校】北京师范大学附属中学2017-2018学年下学期高二年级期中考试数学(理科)试题
5 . 已知点
是椭圆
的右焦点,过
作垂直于长轴的垂线交椭圆于
、
两点,若以
为直径的圆过坐标原点
,则该椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a9126b4eed250c88f47535d72f09d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 若椭圆
的离心率等于
,抛物线
的焦点在椭圆
的顶点上.
(1)求抛物线
的方程;
(2)若过
的直线
与抛物线
交于
、
两点,又过
、
作抛物线
的切线
、
,当
时,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9789258ed7e061dd0200177750ccb571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e393b3e36390b1354950e2cfccc4967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf8af6e62058cc4e2d83d5da7f4c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2020-03-20更新
|
401次组卷
|
4卷引用:陕西省咸阳市2020-2021学年高二上学期期末文科数学试题
陕西省咸阳市2020-2021学年高二上学期期末文科数学试题2020届黑龙江省海林市朝鲜族中学高三上学期期末数学(文)试题(已下线)专题19 圆锥曲线综合-2020年高考数学(理)母题题源解密(全国Ⅱ专版)(已下线)专题19 圆锥曲线综合-2020年高考数学(文)母题题源解密(全国Ⅱ专版)
7 . 曲线
与曲线
的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9113145901a1345cd25e9d4d74011ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a0b7cd7ef659abd35347e5d4ddf709.png)
A.离心率相等 | B.焦距相等 | C.长轴长相等 | D.短轴长相等 |
您最近一年使用:0次
8 . 设
,
分别为椭圆
(
)的左、右焦点。若椭圆上存在点P使得
,
,则该椭圆的离心率为
![](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/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b06b6e7dee36eca1a058ce28d14ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fd401469d9450cccc460a83c71fb527.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 设椭圆方程为
,左右焦点分别为
,上顶点为
,若
为等边三角形,则椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4d6fdc4da8e1a754f34d52dd3e3b32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122ba80be450e578bef55b932232e884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3824d9d42a2bd926fbd8f99a2c37eba.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知椭圆
过点
,其短轴长的取值范围是
,则椭圆离心率的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0dce10bf671cc2ebc67aa7fd568a9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38620d68461307e424923b903ab518f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8eec1c8d1c199819cc936161dc4a91.png)
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