1 . 已知
为平面直角坐标系
上的动点,记其轨迹为曲线
.
(1)请从以下两个条件中选择一个,求对应曲线
的方程.
①已知点
,直线
,动点
到点
的距离与到直线
的距离之比为
:
②已知点
是圆
上的任意一点,点
为圆
的圆心,点
与点
关于原点对称,线段
的垂直平分线与线段
交于点
;
注:如果选择多个条件分别作答,则按第一个解答计分.
(2)延长
至
,使
,点
的轨迹为曲线
,过点
的直线
交曲线
于
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)请从以下两个条件中选择一个,求对应曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e4a3aea4b4b0d87c014030a6ff9027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261e2ccfee2e4df6e1f2021de5da27e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
②已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b012d1310aab427e9deb746015a30d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e55590555905eb4f57889bbd16e39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad0a19415e796564f30906f2e7dbf76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
注:如果选择多个条件分别作答,则按第一个解答计分.
(2)延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c56b32ddc6969b161fa2a1b3ae73d33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed283a253b61df01f2a1cdc0cd8003f3.png)
您最近一年使用:0次
2 . 已知椭圆
的离心率为
,直线
与椭圆C相交于两点M,N,且
.
(1)求C的方程;
(2)若点
,直线
与椭圆C交于两点B,D,且与x轴交于点T.连接
和
.从下列三个条件中选取一个作为条件,探究直线l是否过定点,如是,请求出,如果不是,请说明理由.
①点B关于x轴的对称点在直线
上;
②若直线
与直线
的倾斜角分别为
,
,且满足
;
③B,D两点不在x轴上,设
和
的面积分别为
和
,且
.
注:如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e72f9c2da79c2d5cea3a25540b48b49.png)
(1)求C的方程;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a072f7e07dcefc3db2a0443214eedaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
①点B关于x轴的对称点在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1dbab7580d1671f4d5fa8cfa5c5e981.png)
③B,D两点不在x轴上,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6b4539674e585ecd20d20e8974b611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4088a93100186f0510eba81f962ba90e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39931f7165558c636da27ca0f5765182.png)
注:如果选择多个条件分别解答,按第一个解答计分.
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3 . 已知
是抛物线
的焦点,点
在抛物线
上,过点
的两条互相垂直的直线
,
分别与抛物线
交于
,
和
,
,过点
分别作
,
的垂线,垂足分别为
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95423e8c27d4fc90de1651e5c2ca3da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
A.四边形![]() |
B.四边形![]() ![]() |
C.![]() ![]() |
D.四边形![]() |
您最近一年使用:0次
2023-02-08更新
|
4245次组卷
|
12卷引用:四川省泸州市龙马潭区2023-2024学年高二下学期5月期中考试数学试题
四川省泸州市龙马潭区2023-2024学年高二下学期5月期中考试数学试题广东省清远市清新区部分学校2023届高三下学期2月联考数学试题广东省韶关市部分学校2023届高三下学期开学考试数学试题广东省金太阳2023届高三联考数学试题河北省衡水中学2023届高三下学期第三次综合素养评价数学试题湖南师范大学附属中学2023届高三一模数学试题专题18平面解析几何(多选题)广东省汕头市潮阳实验学校2023届高三下学期4月教学质量检测(四)数学试题广东省茂名市第一中学2023届高三下学期5月半月考(一)数学试题广东省广州市增城区荔城中学2024届高三第二次月考数学试题(已下线)第二章 平面解析几何 单元测试-2023-2024学年高二数学同步精品课堂(人教B版2019选择性必修第一册)(已下线)3.3.2 抛物线的简单几何性质(分层练习)-2023-2024学年高二数学同步精品课堂(人教A版2019选择性必修第一册)
名校
4 . 已知点
,
,点A满足
,点A的轨迹为曲线C.
(1)求曲线C的方程;
(2)若直线
与双曲线:
交于M,N两点,且
(O为坐标原点),求点A到直线l距离的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2e56502edba9511c1ce84ecbf6d2e99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d89e9d012179b974e2c6bb481fa07b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b8dfe216ef4fed64026f3bf694cc23.png)
(1)求曲线C的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f8ae565db8a7d4b95fdd85e28afa2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4489ea382b7a51cd5fc8c5ae585a3ec4.png)
您最近一年使用:0次
2022-04-08更新
|
1966次组卷
|
5卷引用:四川省泸县第四中学2022-2023学年高三上学期第三学月考试数学(理科)试题
名校
解题方法
5 . 如图,
为椭圆上的三点,
为椭圆的上顶点,
与
关于
轴对称,椭圆的左焦点
,且
.
![](https://img.xkw.com/dksih/QBM/2022/3/17/2938423696506880/2939358113349632/STEM/dba26ac5e4bf4b309d8c8dedab46b3ab.png?resizew=231)
(1)求椭圆的标准方程;
(2)过椭圆的右焦点
且与
轴不重合的直线交椭圆于
两点,
为椭圆的右顶点,连接
分别交直线
于
两点.试判断
的交点是否为定点?若是,请求出该定点;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7807638578edd712265463a7a5eab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e2b36e4731ee4c428a713f18217b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4c8c4dc18c89cafbd3bfb297e3d695.png)
![](https://img.xkw.com/dksih/QBM/2022/3/17/2938423696506880/2939358113349632/STEM/dba26ac5e4bf4b309d8c8dedab46b3ab.png?resizew=231)
(1)求椭圆的标准方程;
(2)过椭圆的右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03df57efff473b3cfeb8503796b7d6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103f89feb6e4cbb0bb2b90e0b40ea9ea.png)
您最近一年使用:0次
2022-03-19更新
|
739次组卷
|
4卷引用:四川省泸县第一中学2023届高三二诊模拟考试数学(理)试题
6 . 从抛物线
上各点向
轴作垂线段,记垂线段中点的轨迹为曲线
.
(1)求曲线
的方程,并说明曲线
是什么曲线;
(2)过点
的直线
交曲线
于两点
、
,线段
的垂直平分线交曲线
于两点
、
,探究是否存在直线
使
、
、
、
四点共圆?若能,请求出圆的方程;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/8455657dde27aabe6adb7b188e031c11.png)
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