1 . 在平面直角坐标系
中,已知椭圆
的右顶点为
是椭圆
上位于第一象限内的动点,过
且垂直于
的直线
与
轴交于点
.
(1)若
,且
,求点
的坐标;
(2)当
时,若点
始终在点
的右侧,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c6162828793e697cb1ad643b287c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff571c72c041d8668b4d2754679f64d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd456469aaa6dafb1e275183d217435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c441c7e1d4bc397894cc8a6a169e0d58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
2 . 已知焦点在x轴上且离心率为
的椭圆E,其对称中心是原点,过点
的直线与E交于A,B两点,且
,则点B的纵坐标的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25e326fdf9e5456f48e8a99a069f379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b661c79b7b866204fd4084c37bdd4b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-01-17更新
|
325次组卷
|
2卷引用:重庆市缙云教育联盟2020-2021学年高二上学期期末数学试题
名校
3 . 定义:曲线
称为椭圆
的“倒椭圆”.已知椭圆
,它的“倒椭圆”
.
(1)写出“倒椭圆”
的一条对称轴、一个对称中心;并写出其上动点横坐标x的取值范围.
(2)过“倒椭圆”
上的点P,作直线PA垂直于x轴且垂足为点A,作直线PB垂直于y轴且垂足为点B,求证:直线AB与椭圆
只有一个公共点.
(3)是否存在直线l与椭圆
无公共点,且与“倒椭圆”
无公共点?若存在,请给出满足条件的直线l,并说明理由;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd8e3b0bcd15e02d8762cd00e9dd0cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f036026cd92e9ad059c3f22a7658638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62f059befb299c1bfb96e8b90351b83c.png)
(1)写出“倒椭圆”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过“倒椭圆”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(3)是否存在直线l与椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
2019-11-16更新
|
527次组卷
|
3卷引用:上海市控江中学2018-2019学年高二上学期期末质量调研数学试题
20-21高二下·浙江·期末
4 . 数学中的很多符号具有简洁、对称的美感,是形成一些常见的漂亮图案的基石,也是许多艺术家设计作品的主要几何元素,如我们熟悉的
符号.我们把形状类似
的曲线称为“
曲线”.经研究发现,在平面直角坐标系
中,到定点
,
距离之积等于
的点的轨迹C是“
曲线”.若点
是轨迹C上一点,则下列说法不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83770dfcae8b8e1288aa85d50a63d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d04015890783f6b8b0264b1d1c9127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd0f31afe865a63682ccd4a18a0e0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
A.曲线C关于原点O中心对称 |
B.![]() ![]() |
C.曲线C上有且仅有一个点P满足![]() |
D.![]() ![]() |
您最近一年使用:0次
名校
5 . 已知椭圆C:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的长轴长为4,离心率为
,点P在椭圆C上.
(1)求椭圆C的标准方程;
(2)已知点M (4,0),点N(0,n),若以PM为直径的圆恰好经过线段PN的中点,求n的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆C的标准方程;
(2)已知点M (4,0),点N(0,n),若以PM为直径的圆恰好经过线段PN的中点,求n的取值范围.
您最近一年使用:0次
2020-02-09更新
|
328次组卷
|
2卷引用:2020届北京市通州区高三第一学期期末考试数学试题
6 . 已知椭圆
:
,点
是椭圆
上的一个动点,满足
(
为坐标原点,
为椭圆的右焦点),则点
的横坐标的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.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/87ea33ddce3e892ef281229f138054fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
名校
7 . 已知集合
,
,则
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d6b99db451a201144eafab43c211d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340f07522a0351bd48332980afeb3e53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
您最近一年使用:0次
8 . 对于曲线
:
上的任意一点P,如果存在非负实数M和m,使不等式
恒成立
为坐标原点,M的最小值为
,m的最大值为
,则
的值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b31ef7d04da62b28c25637de25f041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4aef2222db5f282e692e488dc44f262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0feef0c6654b595a5d45650f477a0533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e80a81809ab0dc77992553ee2b7e7f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894263664f880c40777c049482a62ad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6af53161f058ebee7277d5865ed618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.3 | B.4 | C.5 | D.13 |
您最近一年使用:0次
名校
9 . 圆
与椭圆
有公共点,则实数
的取值范围是__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/886b1f42d89db484ec1a8e6c36ae7b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b747db7eaf469c6d1607e4b0d028299f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
14-15高二上·湖北孝感·期末
解题方法
10 . 已知椭圆
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的离心率
,原点到过点
,
的直线的距离是
.
(1)求椭圆
的方程;
(2)若椭圆
上一动点![](https://img.xkw.com/dksih/QBM/2014/4/1/1571593822969856/1571593828761600/STEM/88c650a761b7485281044e600f95fba7.png)
关于直线
的对称点为
,求
的取值范围;
(3)如果直线
交椭圆
于不同的两点
,
,且
,
都在以
为圆心的圆上,求
的值.
![](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/74b1d66c03a291821520346a61b76c95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3160fc73f2a90ae4a1a97351ab2673b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd4113026764680b55207a20b4835e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98ee8ce2c56dccae6b63b5a9ca022b8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2014/4/1/1571593822969856/1571593828761600/STEM/88c650a761b7485281044e600f95fba7.png)
![](https://img.xkw.com/dksih/QBM/2014/4/1/1571593822969856/1571593828761600/STEM/766f0786e0d642bfa19447ff83da9c45.png)
![](https://img.xkw.com/dksih/QBM/2014/4/1/1571593822969856/1571593828761600/STEM/901d49caf1764aadb66eef41f162b442.png)
![](https://img.xkw.com/dksih/QBM/2014/4/1/1571593822969856/1571593828761600/STEM/deb08bdfb2774d95bc4c66d6e1e0b2ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2efe6d795305a7932713f0141d7fa639.png)
(3)如果直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189f95399abb8fe8abad48f4a8b0b3b6.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次