名校
1 . 已知椭圆
:
(
),
、
为椭圆的左右焦点,
为椭圆上一点,连接
并延长交椭圆于另一点
,若
,
,则椭圆
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473f096ac00ca01d1f696ba5f7ae32c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feef1053884ddb8742f48fb60771d8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2024-01-12更新
|
1110次组卷
|
5卷引用:江苏省无锡市辅仁高级中学2023-2024学年高二上学期期中考试数学试卷
江苏省无锡市辅仁高级中学2023-2024学年高二上学期期中考试数学试卷福建省莆田市第二十五中学2023-2024学年高二上学期期末数学试题广东省广州市广东实验中学2024届高三上学期大湾区数学冲刺卷(五)湖北省黄冈市浠水县第一中学2024届高三上学期期末数学试题(已下线)考点14 余弦定理及应用 --2024届高考数学考点总动员【讲】
名校
解题方法
2 . 如图,已知椭圆
,其焦距为4,过椭圆长轴上一动点
作直线交椭圆于
、
,直线
、
交于点
,已知
,则椭圆的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347b68f42934c74e0d759a67613a1da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715abe79425e4e4f2a35fdd745ba653b.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468fc3e395fa3b681c3da37edbe229a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25ec7f5d958d54f9642eecec56e7540.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/f78746a7-c640-4a95-b14e-790feb628e1b.png?resizew=189)
您最近一年使用:0次
2024-01-11更新
|
287次组卷
|
2卷引用:湖北省武汉市东湖中学2023-2024学年高二上学期期中考试数学试题
解题方法
3 . 已知点
是椭圆
上异于上下顶点的任意一点,
为坐标原点,过点
作圆
的切线,切点分别为
,若存在点
使得
,则椭圆离心率的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b4bcb812c997db47214cb52c905f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb4eb87fd9c474fea913e4b68818abd.png)
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2024-01-02更新
|
384次组卷
|
3卷引用:河南省部分重点中学2023-2024学年高二上学期12月质量检测数学试题
名校
解题方法
4 . 已知
分别为椭圆
的左、右焦点,A为右顶点,B为上顶点,若在线段AB上有且仅有一个点P使
,则椭圆
离心率的取值范围为______ (写成集合或区间形式).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a70ac71550d9280fe969ded947e7e2b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c6162828793e697cb1ad643b287c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1086f33fd5082e6d19694093c4174c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2023-12-20更新
|
1052次组卷
|
5卷引用:四川省成都市蓉城名校2023-2024学年高二上学期期末联考数学试题
名校
解题方法
5 . 已知椭圆
与双曲线
(
,
)具有相同的左、右焦点
、
,点
为它们在第一象限的交点,动点
在曲线
上,若记曲线
,
的离心率分别为
,
,满足
,且直线
与
轴的交点的坐标为
,则
的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8210484dd6815b5bebc7b22f1389cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ab2caccd742eb636bd8378661a8807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b967232e28ad0d453adc66676bdf8b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f1ea30341eb5d584710c3aebc64ce8.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/d33558881906c228c262ff8024dcfc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7bcaf273474069ffe4d6e0db22e2cbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c997b8781cf6fe0610171070f13127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8865ce43941563e187aa89e7ff2372c.png)
您最近一年使用:0次
2023-12-16更新
|
1268次组卷
|
6卷引用:广东省潮州市高级中学2023-2024学年高二上学期级第二次阶段考试试卷
名校
6 . 椭圆的光学性质,从椭圆一个焦点发出的光,经过椭圆反射后,反射光线都汇聚到椭圆的另一个焦点上.已知椭圆
为其左、右焦点,
是
上的动点,点
,若
的最大值为
.动直线
为此椭圆
的切线,右焦点
关于直线
的对称点
,则椭圆
的离心率为______ ;
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f678f5d35eef482e6d379c4239cf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0a807a550b61acd46aa4f8677dd6d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9428a97571b54a842e3746b65e6ad3fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/740b42b0a79b0acf003b2ccb7a702d49.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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0cfef4ee915b1b60cc13e6e703736ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
名校
解题方法
7 . 已知椭圆
的左、右焦点分别是
,点
是椭圆上一点,
的内切圆的圆心为
,若
,则椭圆
的离心率为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/b2cfd997d3b66a3b8f7731b26f0ab0c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc052b7ebeec75b180f7271b76538a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2023-12-01更新
|
270次组卷
|
4卷引用:四川省达州市万源中学2023-2024学年高二上学期期中数学试题
四川省达州市万源中学2023-2024学年高二上学期期中数学试题四川省宜宾市叙州区第二中学校2023-2024学年高二上学期期末数学试题河北省承德市高新区第一中学2024届高三上学期12月月考模拟数学试题(已下线)专题7 圆锥曲线与定比分点法【练】(压轴小题大全)
名校
8 . 定义离心率是
的椭圆为“黄金椭圆”.已知椭圆E:
(
)是“黄金椭圆”,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ ,若“黄金椭圆”C:
(
)两个焦点分别为
、
,
,P为椭圆C上的异于顶点的任意一点,点M是
的内心,连接
并延长交
于点N,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b543fe7a15402eb15eccbcef22af6491.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029d393bb07b7140905b85f550519de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0315df3fa09ff81cf6d23f897f6482f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f47ae9928a2146e2075f00b68eb2923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.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/5076829e649b3f3866d4a7e07a5713e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697c20fca284394bf5d5b9e5f6d952e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b543fe7a15402eb15eccbcef22af6491.png)
您最近一年使用:0次
2023-11-26更新
|
387次组卷
|
4卷引用:福建泉州城东中学、南安华侨中学、石狮八中、福建泉州外国语学校四校2023-2024学年高二上学期期中考试数学试卷
福建泉州城东中学、南安华侨中学、石狮八中、福建泉州外国语学校四校2023-2024学年高二上学期期中考试数学试卷湖北省武汉市第六中学2023-2024学年高二上学期第4次月考暨期末联考模拟数学试题(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)(已下线)专题8 圆锥曲线与三角形四心问题【练】(压轴小题大全)
解题方法
9 . 如图,椭圆
:
和
:
有相同的焦点
,
,离心率分别为
,
,
为椭圆
的上顶点,
,
,
,
三点共线且垂足
在椭圆
上,则
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1814ba64f4a9fe8d8ca8e048a33dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db0483dbf74e92ac7fd5bddd06606ee8.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/d33558881906c228c262ff8024dcfc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22995b9d221f61be1debfe81f06570b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64478547eef44fbcea5a4a6038d3dc9e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/5a7df604-d05a-463d-aeb9-9116583235f4.png?resizew=164)
您最近一年使用:0次
2023-11-23更新
|
1027次组卷
|
2卷引用:湖南省三湘名校教育联盟2023-2024学年高二上学期11月期中联考数学试卷
名校
解题方法
10 . 已知
,
分别为椭圆
的左、右焦点,E上存在两点A,B使得梯形
的高为c(其中c为半焦距),且
,则E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/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32954d76532bc9295524c016868eefd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bf9f49d83ae15b18c005815ba05a09.png)
您最近一年使用:0次