名校
解题方法
1 . 已知椭圆
,P是椭圆的上顶点,过点P作斜率为
的直线l交椭圆于另一点A,设点A关于原点的对称点为B.
(1)若直线PA、直线PB的斜率分别为
,
,求
;
(2)设线段PB的中垂线与y轴交于点N,若点N在椭圆内部,求斜率k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcb166b53a49e393871bcb14a528792.png)
(1)若直线PA、直线PB的斜率分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b61e87566a204ffe7247f2fd92bbcb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5822482abbe136f3b372db4499f4c47a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b5e95eecb21dfbcaf012a4fc5dfaa9.png)
(2)设线段PB的中垂线与y轴交于点N,若点N在椭圆内部,求斜率k的取值范围.
您最近一年使用:0次
名校
2 . 椭圆+![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的离心率为
且经过点
其中
,
为椭圆的左、右焦点.
(1)求椭圆的方程;
(2)从椭圆的第一象限部分上一点
向圆
引切线
,
,切点分别为
,
,三角形
的面积等于
,求直线
的方程.
![](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/3fe2c533dbc23a34518f72f3cb14f330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ecebdabc4161ab8fd246198b35093cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(1)求椭圆的方程;
(2)从椭圆的第一象限部分上一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/bd5a8e1bc9748e5519dcd9981b7eb251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b12efb03327f461e868b2ea433f9b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
3 . 设椭圆
的两个焦点是
与
,且椭圆上存在一点P,使得直线
与
垂直.
(1)求实数m的取值范围;
(2)设L是相应于焦点
的准线,直线
与L相交于点Q,若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6fff0025543a27c03471f604a697e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6dc791ae552024ea0df7905bf190f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec092ac7d0b97465cbf0344c80adecf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
(1)求实数m的取值范围;
(2)设L是相应于焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49866cf4a6e8a1d1bdca832888fff510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
您最近一年使用:0次
2022-11-09更新
|
391次组卷
|
2卷引用:2004年普通高等学校招生考试数学(文)试题(全国卷III)
名校
4 . 在平面直角坐标系
中,椭圆
的焦点为
,
,且经过点
.
(1)求椭圆
的标准方程;
(2)若点
在椭圆上,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942488eee77ac769515c9f152c3f4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7a243b1650a023775a0eab3dd3d700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac5225ff6aa3c06ff5c8437f88093f5.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4dbe9ef797e190117dab7ebd8c7871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
5 . 已知焦距为2的椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a4cd7199b171703f8064bc7e7a730f.png)
(
)的左、右顶点分别为
,上、下顶点分别为
,点
为椭圆
上不在坐标轴上的任意一点,且四条直线
的斜率之积为
.
(1)求椭圆
的标准方程;
(2)如图所示,点
是椭圆
上两点,点A与点B关于原点对称,
,点 C 在 x 轴上,且
与 x 轴垂直,求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a4cd7199b171703f8064bc7e7a730f.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/ed2988e435ffb7935d49569ee824262f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d283e0523608b39609658a238946d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22962a2ad892cb6b14ab039a06e8cdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9dde7e3a164b37c806872ef8430a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
(2)如图所示,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663aa29cf0f19e37809eb6ea70c4e767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d1fdf1d417bf19e377e44d279014d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/10e66bbc-e8cb-443b-ad7d-5e71b5f21e5e.png?resizew=151)
您最近一年使用:0次
6 . 在平面直角坐标系中,动点
到定点
的距离与它到直线
的距离之比是常数
,记
的轨迹为
.
(1)求轨迹
的方程;
(2)过
且不与
轴重合的直线
,与轨迹
交于
两点,线段
的垂直平分线与
轴交于点
,在轨迹
上是否存在点
,使得四边形
为菱形?若存在,请求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e1a85a657231ef717809d5a839ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)求轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d4ab45e8e8f0084d8d90a4c1233d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-02-16更新
|
976次组卷
|
2卷引用:2016届四川省绵阳市高中高三上学期第二次诊断理科数学试卷
13-14高二上·安徽池州·期中
7 . 矩形
的中心在坐标原点,边
与
轴平行,
=8,
=6.
分别是矩形四条边的中点,
是线段
的四等分点,
是线段
的四等分点.设直线
与
,
与
,
与
的交点依次为
.
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/57f1591ebeb842f19cbd763b71f91200.png)
(1)以
为长轴,以
为短轴的椭圆Q的方程;
(2)根据条件可判定点
都在(1)中的椭圆Q上,请以点L为例,给出证明(即证明点L在椭圆Q上).
(3)设线段
的
(
等分点从左向右依次为
,线段
的
等分点从上向下依次为
,那么直线
与哪条直线的交点一定在椭圆Q上?(写出结果即可,此问不要求证明)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/435b32cf5c70495d8a9d4ae686403b4e.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/f9e9f76a62c94107aede2953c25c254a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/6759f0b6901340f8b45b2dd7c9b0f686.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/f9e9f76a62c94107aede2953c25c254a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/0944b5e4d0eb448480b8a5ed7701764f.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/8b4d9f94de0845cca892771d54aaa380.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/4af4218c3ee24fa2a45bc052a533e366.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/86c3196595864ed987d9176ce60110d3.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/1c89e7ef630a4caebd00a40541db89e2.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/52b21f978fec4d919d0ce9514f5c5c6a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/7cf316df36354570b9695d8b198bc600.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/1ec51823a90b49449b4cb9df6d8e6d8a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/4dd956b823c240a6aee2a935734e2b45.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/f24db0921c334e5f9d168df0f09a7da8.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/a40af3c63639460a8bd0aa73dc5c35a6.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/e163e696296f496c807f6906f549a775.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/ff27d02022384d009917f6cdb1641ce6.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/57f1591ebeb842f19cbd763b71f91200.png)
(1)以
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/22b901d8dabe44fd9eab93ed4dc7aa4d.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/ec4d271858b64924b9da55af5ca50212.png)
(2)根据条件可判定点
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/ff27d02022384d009917f6cdb1641ce6.png)
(3)设线段
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/86c3196595864ed987d9176ce60110d3.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/a850fcc7040e43a3b14bd41677fb5a13.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/9583e5aee617486aa2d5793549fbd241.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/5e49a32f835f41aa875bc23536562cf0.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/52b21f978fec4d919d0ce9514f5c5c6a.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/a850fcc7040e43a3b14bd41677fb5a13.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/a961e17883464621a631d89b586232bf.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457090797568/1571457096687616/STEM/b5b5ffc22ad344929af9d7d5b7f748d4.png)
您最近一年使用:0次