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1 . 已知直线
与椭圆
,点
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74b54fca09a55c3720426e2dc4dfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb57bb18755127be041d346444a4743e.png)
A.若点A在椭圆C外,则直线l与椭圆C相离 |
B.若点A在椭圆C上,则直线l与椭圆C相切 |
C.若点A在椭圆C内,则直线l与椭圆C相交 |
D.若点A在直线l上,则直线l与椭圆C的位置关系不确定 |
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4卷引用:四川省达州市开江县开江中学2022-2023学年高三下学期第6次模拟数学试题
四川省达州市开江县开江中学2022-2023学年高三下学期第6次模拟数学试题云南省昆明市云南师范大学附属中学2023届高三上学期月考(六)数学(理)试题(已下线)模块一 专题13 圆锥曲线的方程1(已下线)专题3.3 直线与椭圆的位置关系【八大题型】-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)
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2 . 已知直线
与椭圆
交于
两点,且
(其中
为坐标原点),若椭圆的离心率
满足
,则椭圆长轴的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7df99fe6438442a9453fc0c57fb703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb28e80471e65a91b0afe634acf8052.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-03-23更新
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解题方法
3 . 已知椭圆
:
的左右焦点分别是
,抛物线
与椭圆
有相同的焦点,点
为抛物线与椭圆
在第一象限的交点,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/8d63660b-7a88-4e0e-9fef-c309f43393c1.png?resizew=201)
(1)求椭圆
的方程;
(2)过点
作直线
与椭圆
交于
两点,设
.若
,求
面积的取值范围.
![](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/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996366eec411fe56ed031a516d90f167.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/8d63660b-7a88-4e0e-9fef-c309f43393c1.png?resizew=201)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d5b5ffa67d3729bf5508eccb1b2af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e7658ba3a4a4a0fbb0cfc32536234b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5e56b5cbcf69756792fc934bcc20cb.png)
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4 . 已知椭圆
的左,右焦点分别为
,离心率为
,
是
上的一个动点.当
是
的上顶点时,
的面积为
.
(1)求
的方程;
(2)设斜率存在的直线
与
的另一个交点为
.若存在点
,使得
,求
的取值范围.
![](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/f89eef3148f2d4d09379767b4af69132.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c043d5e847c15f00af2c4633949680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设斜率存在的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](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/439e95540157803d4ac3cf61a49f50a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7f5506d346be580063f97411fbf9a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2019-03-18更新
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4卷引用:【市级联考】四川省攀枝花市2019届高三下学期第三次统考(文)数学试题
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5 . 已知椭圆
的离心率为
,直线
与椭圆有且只有一个交点
.
(1)求椭圆
的方程和点
的坐标;
(2)设
为坐标原点,与
平行的直线
与椭圆
交于不同的两点
,直线
与直线
交于点
,试判断
是否为定值,若是请求出定值,若不是请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33913f223c4ba0f610e92cca48652c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be99fa94a1f3e4964fcc13a14fab9ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2da6ef88591589f330304297d3abfcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb398137779190b35492d9f06d5fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2da6ef88591589f330304297d3abfcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eeb95d974e8b932b4df1313b9c18f11.png)
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2018-12-03更新
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6 . 已知A(-2,0),B(2,0)为椭圆C的左、右顶点,F为其右焦点,P是椭圆C上异于A,B的动点,且△APB面积的最大值为
.
(Ⅰ)求椭圆C的方程;
(Ⅱ)直线AP与椭圆在点B处的切线交于点D,当点P在椭圆上运动时,求证:以BD为直径的圆与直线PF恒相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(Ⅰ)求椭圆C的方程;
(Ⅱ)直线AP与椭圆在点B处的切线交于点D,当点P在椭圆上运动时,求证:以BD为直径的圆与直线PF恒相切.
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2018-08-06更新
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5卷引用:四川省绵阳南山中学2020届高三下学期第四次诊断模拟数学(文)试题