1 . 已知椭圆
的离心率为
且过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83872ef423683a1202475a4dd85c181d.png)
(1)求
的方程;
(2)若点
在
上,在下面两个问题中选择一个,并作答.
①若
证明直线
经过定点.
②若直线
的倾斜角互补,证明直线
的斜率为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143e0b6bdc1a1f166dfb6cbe7be22c21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b539461f24fa61751b7e6ac653aaad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83872ef423683a1202475a4dd85c181d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5885627706e1a9c7560ca6b425340e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc3fa649ed4e64c9c4df31f98ff53248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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2 . 已知椭圆
的左,右焦点分别为
,Q为E短轴的一个端点,若
是等边三角形,点
在椭圆E上,过点
作互相垂直且与x轴不重合的两直线AB,CD分别交椭圆E于A,B,C,D,且M,N分别是弦AB,CD的中点.
(1)求椭圆E的方程;
(2)求证:直线MN过定点;
(3)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4085b194990fc17f8073878b8eca1a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/278b99933923773091940d566d36277c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(1)求椭圆E的方程;
(2)求证:直线MN过定点;
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5585a42c8f07ad90b94ace9db3d78994.png)
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2024-04-12更新
|
425次组卷
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2卷引用:陕西省渭南市2024届高三下学期教学质量检测(Ⅱ)数学(文科)试题
名校
解题方法
3 . 已知椭圆
:
的左、右焦点分别为
,
,过点
作x轴的垂线与椭圆交于M,N两点,
,
.
(1)求椭圆C的标准方程;
(2)若椭圆C的上顶点为P,直线l与该椭圆交于A,B两点(异于上、下顶点),记直线PA的斜率为
,直线PB的斜率为
,且
,证明:直线l过定点,并求出该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/9cbdd945cdadb7dca0d281d791374573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f1e02c7c258970e28c4854c36c9dc8.png)
(1)求椭圆C的标准方程;
(2)若椭圆C的上顶点为P,直线l与该椭圆交于A,B两点(异于上、下顶点),记直线PA的斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec7bcf5820dfe70290259c2d7ac1ea5.png)
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2024-04-07更新
|
513次组卷
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2卷引用:河南省部分学校(金科)大联考2023~2024学年高二下学期第一次质量检测数学试题
4 . 已知椭圆
:
(
)的左右顶点
,
的坐标分别为
,
,离心率为
.
(1)求椭圆
的方程;
(2)过点
作直线
交椭圆
于
,
两点,设点
关于
轴的对称点为
.
①求证直线
过定点;
②求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd243fab0af865af67a2ab817e909cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
①求证直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df356846992174e641898c61380af591.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2cf4b11fe84c33c931919391e705c5.png)
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5 . 已知椭圆
的焦距为6,圆
9与椭圆C有且仅有两个公共点
(1)求椭圆
的标准方程;
(2)已知动直线
过曲线
的左焦点F,且与椭圆
分别交于P,Q两点,试问x轴上是否存在定点R,使得
为定值?若存在,求出该定点坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ac87fe673ce030e468921070f2c540.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知动直线
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0165dc138f86a9d818eb9a098b4a0d67.png)
您最近一年使用:0次
2024高三·全国·专题练习
解题方法
6 . 已知椭圆E:
的左顶点为A,设直线l交椭圆E于M、N两点,且以
为直径的圆恒过点A,求证:直线l恒过定点,并且求出此定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f4b244b3b0799cfb1994364036eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
7 . 已知椭圆E:
过点
,且焦距为
.
(1)求椭圆E的标准方程;
(2)过点
作两条互相垂直的弦AB,CD,设弦AB,CD的中点分别为M,N.
①证明:直线MN必过定点;
②若弦AB,CD的斜率均存在,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)求椭圆E的标准方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc3e47a358860345e74450ce2af9f9e.png)
①证明:直线MN必过定点;
②若弦AB,CD的斜率均存在,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb673705e1e596353a8dc38cc74a8a0e.png)
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2024-03-27更新
|
1834次组卷
|
5卷引用:河南省郑州市2024届高三第二次质量预测数学试题
名校
解题方法
8 . 已知椭圆
的左右顶点分别为A、B,点C在E上,点
分别为直线
上的点.
(1)求
的值;
(2)设直线
与椭圆E的另一个交点为D,求证:直线
经过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234cab13febe61a7d2237308672f70e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8b2a723e48d8e02248e4fab1c5f818c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afbfb05e2ec0eb61fde5339fa2809ad7.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
解题方法
9 . 已知
,
,动点Z满足
.
(1)求动点Z的轨迹曲线
的标准方程;
(2)四边形ABCD内接于曲线E,点A,B分别在x轴正半轴和y轴正半轴上,设直线AC,BD的斜率分别是
,且
.
(i)记直线AC,BD的交点为G,证明:点G在定直线上;
(ii)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9d55173f26afdf0e37462b556a605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d6f746c2355072d914591bf60c3801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cab3cac8b329049bca64cf6d408e3e.png)
(1)求动点Z的轨迹曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)四边形ABCD内接于曲线E,点A,B分别在x轴正半轴和y轴正半轴上,设直线AC,BD的斜率分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c407500c3f3d395fdfdc366851ef3fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e17518270ea2ab340b0933d7ed44a2c.png)
(i)记直线AC,BD的交点为G,证明:点G在定直线上;
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
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解题方法
10 . 已知椭圆
的左、右顶点分别为
,
,点
为直线
上的动点.
(1)求椭圆
的离心率.
(2)若
,求点
的坐标.
(3)若直线
和直线
分别交椭圆
于
,
两点,请问:直线
是否过定点?若是,求出定点坐标;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/964cb45b9b1e432444134dbdf2bbd7ac.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbd8a5d973b7a54b7605388fdcfbb07.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23486dbb947fcd997ed14c05584abfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800c5e266b4ad8462a46970f0a232d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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2024-03-14更新
|
1031次组卷
|
2卷引用:浙江省强基联盟2024届高三下学期3月联考数学试题