名校
解题方法
1 . 如图,已知椭圆
的左、右焦点分别为
,过椭圆左焦点
的直线与椭圆
相交于
两点,
,
,则椭圆
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3324199c6751f2e0e6d8542783b0d957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c388f94adc940de0fd317d00b3cd9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040b10c7d1c56f08e3d31a61195c689a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/a1e3ab5b-2a04-417e-aeee-b7ba4905e233.png?resizew=165)
您最近一年使用:0次
2024-01-25更新
|
320次组卷
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5卷引用:甘肃省庆阳市环县第一中学2023-2024学年高二上学期期末考试数学试题
2 . 已知二次曲线
的方程为:
,当m,n为正整数,且
时存在两条曲线
,其交点P与点
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94555857a26590865f337f8c4a93c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f219575dd7bb6c3d8912a0d6d81a294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e00a9e5172c28e6895801dc9c53134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d51de84ea16fc5553ba3d588f379f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce67f2138e7295cd72d66b2908cb6de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
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3 . 在平面直角坐标系中,已知
的顶点
,
,点
在椭圆
上,则
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名校
4 . 已知
是椭圆
上一动点,
是圆
上一动点,点
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914075a4574c09bdb860d8f8f09a4e7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648c5d95d6085f0c44d8ca9f7d510661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00ff23b7edede885b8945ca0f407f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c07d0b580b9a9a9899059506bdc3ba.png)
A.3 | B.4 | C.5 | D.6 |
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2024-02-11更新
|
255次组卷
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2卷引用:福建省宁德市2023-2024学年高二上学期期末质量检测数学试题
名校
解题方法
5 . 设椭圆
的左、右焦点分别为
、
,
是椭圆上一点,
,
,则椭圆离心率的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/270293c264f41c40c25f90121c7d797e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d7f9f941778a83e4c38f872cc5ad1d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-01-13更新
|
1328次组卷
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8卷引用:山东省济宁市第一中学2023-2024学年高二上学期质量检测(三)数学试题
山东省济宁市第一中学2023-2024学年高二上学期质量检测(三)数学试题广东省广州市培正中学2024届高三上学期第一次模拟测试数学试题江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(六)山东省淄博市第七中学2023-2024学年高二上学期期末数学试题(已下线)高三数学开学摸底考02(新考法,新高考七省地区专用)(已下线)大招6圆锥曲线第一定义的应用(已下线)专题8.2 椭圆综合【九大题型】(已下线)第10题 共焦点的椭圆离心率问题(压轴小题)
名校
解题方法
6 . 已知椭圆
的左,右焦点分别为
,过点
且垂直于
轴的直线与椭圆交于
两点,
分别交
轴于
两点,
的周长为6,过
作
外角平分线的垂线与直线
交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ce9da1390cca752cd508e1f4190df6.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013fcf67631b4a27d4eaee7957b29ac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbaa023d0248161917794c5592fd3a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fea5f7430235e65d2c2e6b2ecc46712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e9fa3f5593dd7ee0151ab1df89f04a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ce9da1390cca752cd508e1f4190df6.png)
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2024-01-05更新
|
927次组卷
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2卷引用:黑龙江省鸡西市第一中学校2024届高三上学期期末数学试题
名校
解题方法
7 . 设椭圆的两个焦点分别为
、
,过
作椭圆长轴的垂线交椭圆于点
,若
为等腰直角三角形,则椭圆的离心率是( )
![](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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-12-31更新
|
1367次组卷
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7卷引用:天津市武清区河西务中学2023-2024学年高二上学期第二次统练数学试题
8 . 设椭圆
的左、右焦点分别为
,
是
上的动点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533b93dd6eb6b474481247736699c76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() |
B.![]() ![]() |
C.离心率![]() |
D.以线段![]() ![]() |
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2023-12-29更新
|
369次组卷
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2卷引用:甘肃省白银市靖远县第二中学2023-2024学年高二上学期期末模拟数学试题
名校
9 . 已知椭圆
的左、右焦点分别为
的上顶点为M,且
,双曲线
和椭圆
有相同的焦点,P为
与
的一个公共点.若
(O为坐标原点),则
的离心率
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46835ae5791f2dde458bf1b0b286d8c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25119bf2918ad02ef11d3c19f2200dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/0249b5a1c87abaa38db1139d129140ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-12-28更新
|
1269次组卷
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6卷引用:湖南省岳阳市平江县第一中学2023-2024学年高二上学期12月月考数学试题
湖南省岳阳市平江县第一中学2023-2024学年高二上学期12月月考数学试题广东省惠州市第一中学2024届高三元月阶段测试数学试题(已下线)【一题多解】巧求离心率 坐标与几何(已下线)高二数学开学摸底考02(人教A版2019选一+选二全部,范围:空间向量与立体几何+直线与圆+圆锥曲线+数列+导数)-2023-2024学年高二数学下学期开学摸底考试卷吉林省长春市朝阳区长春外国语学校2023-2024学年高二下学期开学考试数学试题福建省福州市福清第一中学2023-2024学年高二下学期开门检测数学试题
名校
解题方法
10 . 若椭圆
:
的两个焦点为
,
,点
在椭圆
上,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ddce8b513016e50009c72e49708faed.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b606562b6515b13dc022d5a6db5b00c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c406c942d1cf93b68e69842743520578.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-12-26更新
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3卷引用:广东省六校联盟2023-2024学年高二上学期联考数学试题