1 . 已知曲线C的方程为
则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9565a9e436f48d70b6539908943e3d.png)
A.当![]() |
B.当![]() ![]() |
C.“![]() |
D.存在实数![]() ![]() |
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2020-12-06更新
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3卷引用:安徽省芜湖市沈巷中学2023-2024学年高二上学期12月考试数学试题
名校
2 . 已知p:曲线C:
表示焦点在y轴上的椭圆,q:
,若p成立的一个必要不充分条件是q,则m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea53e2d5f22fbd178f9a30ccf5f2684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b087fcb3b2fbfa60bd5561e3ec96c9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020·天津·一模
名校
3 . 已知椭圆
的右焦点
的坐标为
,离心率
.
(Ⅰ)求椭圆的方程;
(Ⅱ)设点
、
为椭圆上位于第一象限的两个动点,满足
,
为
的中点,线段
的垂直平分线分别交
轴、
轴于
、
两点.
(ⅰ)求证:
为
的中点;
(ⅱ)若
(
为三角形的面积),求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
(Ⅰ)求椭圆的方程;
(Ⅱ)设点
![](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/9c9ca9ea5c24e205bf7e26d1f5aa49fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354fde54578847cff445d48efec9e175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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2020-05-09更新
|
796次组卷
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4卷引用:安徽省芜湖市安徽师大附中2023-2024学年高二上学期12月测试数学试题
安徽省芜湖市安徽师大附中2023-2024学年高二上学期12月测试数学试题(已下线)2020届天津市河西区高三高考一模数学试题湖北省武昌实验中学2023届高考适应性考试数学试题湖北省武汉市武昌实验中学2023-2024学年高二上学期12月月考数学试题
名校
4 . 若椭圆
的一个焦点坐标为
,则
的长轴长为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481ff0f3e12d9f4d771298537760009b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2020-09-22更新
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7卷引用:安徽师范大学附属中学2020届高三下学期6月第九次模拟考试文科数学试题
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5 . 已知椭圆的中心在原点,焦点在x轴上,长轴长为12,离心率为
,则椭圆的方程为__
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
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651次组卷
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3卷引用:安徽省芜湖市第一中学2021-2022学年高二上学期期中数学试题
名校
解题方法
6 . 已知椭圆
的离心率为
,
、
分别为椭圆
的左、右顶点,
为椭圆
的上顶点,
为椭圆的左焦点,且
的面积为
.
(1)求椭圆
的方程;
(2)设过点
的动直线
交椭圆
于
、
两点(点
在
轴上方),
、
分别为直线
、
与
轴的交点,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4985bbec8972619f81eb3294c4f2280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f8f7e40ba386c0a9675896b52752d6.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d776a89f4fd29dccffe1040069d59ee.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/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/81dea63b8ce3e51adf66cf7b9982a248.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/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b0f4398097073abf52b033231ef8c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80db32fac2352412416e2c95d5d8a35c.png)
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2022-05-08更新
|
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3卷引用:安徽省芜湖市2022届高三下学期5月教育教学质量监控理科数学试题
安徽省芜湖市2022届高三下学期5月教育教学质量监控理科数学试题吉林省辽源市第五中学校2022-2023学年高二上学期期末数学试题(已下线)江西省上饶市2023届高三第一次高考模拟考试数学(理)试题变式题16-20
名校
解题方法
7 . 如图,椭圆
的左、右焦点分别为
,
,过点
的直线与椭圆相交于P,Q 两点.若
,
,
,则椭圆C的方程为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/f0331478-ee5d-40eb-9998-e35234b230d7.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f977940552e09f59ea959965522dfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4963d116d232acb4f69e86455cdf81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c10d8a74401cc9c0c1983063442971fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/f0331478-ee5d-40eb-9998-e35234b230d7.png?resizew=167)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-12-03更新
|
943次组卷
|
6卷引用:安徽省芜湖市繁昌皖江中学2023-2024学年高一上学期第一次阶段性检测数学试题
名校
8 . 历史上第一个研究圆锥曲线的是梅纳库莫斯(公元前375年——325年),大约100年后,阿波罗尼斯更详尽、系统地研究了圆锥曲线,并且他还进一步研究了这些圆锥曲线的光学性质:如图甲,从椭圆的一个焦点出发的光线或声波,经椭圆反射后,反射光线经过椭圆的另一个焦点,其中法线
表示与椭圆的切线垂直且过相应切点的直线.
已知图乙中,椭圆
的中心在坐标原点,焦点为
,由
发出的光线经椭圆两次反射后回到
经过的路程为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/4d8b5fff-060b-441b-b8d1-b0e6b983f7b2.png?resizew=402)
(1)点
是椭圆
上除顶点外的任意一点,椭圆
在点
处的切线为
在
上的射影
满足
,利用椭圆的光学性质 求椭圆
的方程;
(2)在: (1)的条件下,设椭圆
上顶点为
,点
为
轴上不同于椭圆顶点的点,且
,直线
分别与椭圆
交于点
(
异于点
),
,垂足为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
已知图乙中,椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6d8926cb77400ed2f3ed6b8d8b9507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693a91a26e13e9b353ba55306274872f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/4d8b5fff-060b-441b-b8d1-b0e6b983f7b2.png?resizew=402)
(1)点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71931f7caab518980d6de39a19fe832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997017a55599dc6f6b2ff08105768fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)在: (1)的条件下,设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d329ab8c9ae2c6aa74f3d2f3543afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbeae601ff13e3f6a5a9d28345bce45f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eab42527ce16b1331aa234e69666ec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab2ddcf75c7906b1a9aad3bcbd76a75.png)
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9 . 在直角坐标平面内,已知
,
以及动点
是
的三个顶点,且
,则动点
的轨迹曲线
的离心率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852b303689c31189cd47bb4a3220f9fa.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/fb3691cbf2e511e692f0781ff2651970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
10 . 椭圆
的左、右焦点分别为
,顶点
到
的距离为4,直线
上存在点
,使得
为底角是
的等腰三角形,则此椭圆方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c09615735d331befd07664aa47cb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b66cbd88f14cdf066f2bba08bfd1d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1395faf32cb3c0b4b16277fed1a43e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
您最近一年使用:0次
2018-03-14更新
|
1864次组卷
|
2卷引用:安徽省芜湖市2018届高三上学期期末考试(一模)文科数学试题