2024高三·全国·专题练习
解题方法
1 . 若
,请问方程
可以表示怎样的曲线?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b01e2fb43079cdf708daa0167ab04e.png)
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2 . 已知点
,
,直线
相交于点M,且它们的斜率之积是1.求点M的轨迹E的方程;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38729d36302cda29e4878e9a094b65f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a64d2e963e29c2c691bb297ec30d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55fb7ec4aa413693f4ecae59fe0e2084.png)
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真题
解题方法
3 . 如图,椭圆的长轴
与x轴平行,短轴
在y轴上,中心为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/3ed9fd99-c37e-4477-bfd6-d8eb42e17367.png?resizew=293)
(1)写出椭圆的方程,求椭圆的焦点坐标及离心率;
(2)直线
交椭圆于两点
;直线
交椭圆于两点
,
.求证:
;
(3)对于(2)中的中的在
,
,
,
,设
交
轴于
点,
交
轴于
点,求证:
(证明过程不考虑
或
垂直于
轴的情形)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc9076974ebd6331d67055302be8167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e395571ff5d1ea9ea8ceb06522211f89.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/3ed9fd99-c37e-4477-bfd6-d8eb42e17367.png?resizew=293)
(1)写出椭圆的方程,求椭圆的焦点坐标及离心率;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766bc42b7ead98238a339bb4dc42bb51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e9c4ea393bbf064453e91f4800f967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f8af9ce5d927e6f422de42ead6ffb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a060ffc86c94a526d4d1086e5590a4f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea915b7c0562b239ea553b9ed2f9897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6318191342aedeaeeddb0f259ed759b3.png)
(3)对于(2)中的中的在
![](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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.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/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15abfafc59b6f9f01f3be4db4df797d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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4 . 已知常数
,向量
,
,经过原点
以
为方向向量的直线与经过定点
以
为方向向量的直线相交于点
,其中
.试问:是否存在两个定点
、
,使得
为定值.若存在,求出
、
的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b55bb24593965896b3e7a08021ae8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629dd1a75b0ee6326dad343f834a4609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e975b4fdd954195fe327b0572c01f4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d8da179d60dd9ec6ece6de442ae1b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67319d802854f2f907c4775697cfbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a14e0823e3083ee73d374700835dfdb.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/0e5f665e6135eb64a615103147c91c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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2022-11-09更新
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367次组卷
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5卷引用:专题03 条件存在型【练】【北京版】