设A,B分别是直线
和
上的动点,且
,设O为坐标原点,动点G满足
.
(1)求点G运动的曲线C的方程;
(2)直线
与曲线C交于M,N两点,O为坐标原点,当k为何值,
恒为定值,并求此时
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91a18f8751aa1008f1e43516a588207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f899446faaf4935179eec468e5943b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd2d9dc6872ed14cc33ce6619c59a4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c2edbce7e34726aaeb2bb5da100004.png)
(1)求点G运动的曲线C的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/327a8132cb929667c033a3c20bd9c67c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4de13a47637548ce5594ed8d64dec0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
2022·辽宁·模拟预测 查看更多[5]
辽宁省渤海大学附属高级中学2022届高三考前测试数学试题(已下线)专题24 圆锥曲线中的存在性、探索性问题 微点2 圆锥曲线中的探索性问题四川省泸县第五中学2022-2023学年高二下学期期中数学(文)试题四川省泸县第五中学2022-2023学年高二下学期期中数学(理)试题(已下线)湖南省邵阳市邵东创新实验学校2023-2024学年高二上学期期中数学试题
更新时间:2022-06-14 22:22:45
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相似题推荐
【推荐1】已知矩形
中,
分别是矩形四条边的中点,以矩形中心
为原点,
所在直线为
轴,
所在直线为
轴,建立如图所示的平面直角坐标系.直线
上的动点
满足
.
(1)求直线
与直线
交点
的轨迹方程;
(2)当
时,过点
的直线
(与
轴不重合)和点
轨迹交于
两点,过点
作直线
的垂线,垂足为点
.设直线
与
轴交于点
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d1ddc2801762a05d06ff72bae119358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b95463a97c60db3250cb641bf6523d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0caf56b4b164191c2394b8f1a213a8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbbc9c5353894f2c93c205c3ac04f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2c50ffc167ed684d009303258d4b30.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/369f25d6-ae6f-4687-9caa-68600c0fc1ce.png?resizew=199)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf2130848c57fdbb994e41f107329b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52486ff281aeb7dff426ae3040adcd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd6afd8d57699f5cb40ca9949fabd22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0778559e1601f19625786dc20304fe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e8acea56a9f17e6ef9bbce1633497f.png)
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【推荐2】在
中,已知
,
,
交
于点
,
为
中点,满足
,点
的轨迹为曲线
.
(1)求曲线
的方程:
(2)过点
作直线
交曲线
于
,
两点,试问以
为直径的圆是否恒过定点?若过定点求出定点,若不过定点说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fcb73920188f0215bd21a0148eeebed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e2fc39db609b1b8d26de387dccb08a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24ad0a87392245e4bf5bafe26089803b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d1e99a13822b33ae59f371d0e1415a.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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名校
解题方法
【推荐1】已知椭圆
:
(
)的下顶点为
,点
的坐标为
,直线
与
轴的交点的横坐标为
,且
.
(1)求
的方程;
(2)
的切线
与
轴、
轴分别交于
,
两点,
上与
距离最大的点为
,求
面积的最小值.
![](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/5a0c4c098615c6bc7e6dcf72e5b5201a.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/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512fb5338ab8fb9def37bbb4dd5592d7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/d053b14c8588eee2acbbe44fc37a6886.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3b785ebbf5889849e872f461669f71.png)
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解题方法
【推荐2】如图,定义:以椭圆中心为圆心,长轴为直径的圆叫做椭圆的“辅助圆”.过椭圆第四象限内一点M作x轴的垂线交其“辅助圆”于点N,当点N在点M的下方时,称点N为点M的“下辅助点”.已知椭圆
上的点
的下辅助点为(1,﹣1).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/ef0cf04b-2c48-4168-bbf7-af92fadb0b62.jpg?resizew=197)
(1)求椭圆E的方程;
(2)若△OMN的面积等于
,求下辅助点N的坐标;
(3)已知直线l:x﹣my﹣t=0与椭圆E交于不同的A,B两点,若椭圆E上存在点P,使得四边形OAPB是对边平行且相等的四边形.求直线l与坐标轴围成的三角形面积最小时的m2+t2的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970ba72e3f4cf6e8ae4df4214462ba1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9330429e6c8627ee476fac9cf42afa8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/ef0cf04b-2c48-4168-bbf7-af92fadb0b62.jpg?resizew=197)
(1)求椭圆E的方程;
(2)若△OMN的面积等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9729af994743a64bf0785357fd5e3b.png)
(3)已知直线l:x﹣my﹣t=0与椭圆E交于不同的A,B两点,若椭圆E上存在点P,使得四边形OAPB是对边平行且相等的四边形.求直线l与坐标轴围成的三角形面积最小时的m2+t2的值.
您最近一年使用:0次
【推荐1】以坐标原点为对称中心,焦点在
轴上的椭圆
过点
,且离心率为
.
(1)求椭圆
的方程;
(2)若点
,动点
满足
,求动点
的轨迹所围成的图形的面积;
(3)过圆
上一点
(不在坐标轴上)作椭圆
的两条切线
.记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d656e38e97ed667a11238b3cc1d159a.png)
的斜率分别为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9fdf8b318ddf822775a61ff26eb8a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)过圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50297ad9f7256b4d2efc3462289f18b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d656e38e97ed667a11238b3cc1d159a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50297ad9f7256b4d2efc3462289f18b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3655b1325e81a65478c0e3936bc6fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3920629ef1f62e431ba8e1f8dff4678b.png)
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解题方法
【推荐2】已知椭圆
:
的离心率为
,且过点
.
(1)求椭圆
的方程;
(2)斜率为
的直线
交椭圆于P,Q(
不与
重合)两点,直线AP,AQ分别交x轴于点M,N,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e90064d012356de1877aa697cd6d6ac.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b485b62d004d52fb31d6ed99ccb7669.png)
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