名校
解题方法
1 . 在平面直角坐标系中,已知
分别是椭圆
的左焦点和右焦点.
(1)设
是椭圆
上的任意一点,求
取值范围;
(2)设
,直线
与椭圆
交于
两点,若
是以
为直角顶点的等腰直角三角形,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4402aeb853b22f20992156957ef0fd.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/674210d2cb7ba447119dc963d02edfb0.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.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/fbdb21011ea821b91d539cb763aac649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2023-06-01更新
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7卷引用:江苏省连云港市灌南高级中学2021-2022学年高二上学期期中数学试题
2 . 已知中心在原点
的椭圆
的长轴长为
,且与抛物线
有相同的焦点.
(1)求椭圆
的方程;
(2)若点
的坐标为
,点
,
是椭圆
上的两点
点
,
,
不共线
,且
,证明直线
斜率存在时
过定点,并求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f436117499e8ba9cb034e2704fc0dd.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7caece8deb52fc5443cb0aac8a38b19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23711dc6a2e6e068a9f2287f8862600e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370abdf35cb8817d35b78eea892731ce.png)
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2022-08-04更新
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5卷引用:江苏省南通市启东市东南中学2021-2022学年高二上学期期中数学试题
3 . 在①离心率为
,且经过点
;②半长轴的平方与半焦距之比等于常数
,且焦距为
这两个条件中任选一个,补充在下面的问题中,若问题中的直线
存在,求出
的方程;若问题中的直线
不存在,说明理由.
问题:已知曲线
:
的焦点在
轴上,______,是否存在过点
的直线
,与曲线
交于
,
两点,且
为线段
的中点?
注:若选择条件①和条件②分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad42625f296d2a4b65180e2f7b776beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd0caec008c15302ca973b8e655b748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
问题:已知曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1dbdc24b0c2ec6ae25344f0da3347ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a436db19eb954d31075d5398f1b92ecd.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
注:若选择条件①和条件②分别解答,按第一个解答计分.
您最近一年使用:0次
4 . 已知椭圆C:
1(a>b>0)长轴长为4,且椭圆C的离心率
.
(1)求椭圆C的方程;
(2)设斜率为1的直线l与椭圆C交于P,Q两点,O为坐标轴原点,以PQ为直径的圆过坐标轴原点,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e140212aa35c3bac1fd1cf7d97807f9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da40c0caa13092a358d73cdbd65c4c78.png)
(1)求椭圆C的方程;
(2)设斜率为1的直线l与椭圆C交于P,Q两点,O为坐标轴原点,以PQ为直径的圆过坐标轴原点,求直线l的方程.
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名校
解题方法
5 . 已知点
在圆
上运动,点
在
轴上的投影为
,动点
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f426f031f89d1672118e6f479e0faddf.png)
(1)求动点
的轨迹方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
的动直线
与曲线
交于
两点,问:是否存在定点
,使得
的值是定值?若存在,求出点
的坐标及该定值;若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1000c40056cb9ed50d7157b8dd998fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f426f031f89d1672118e6f479e0faddf.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f27e49ddbafda70175629cf3a7941d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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2022-07-24更新
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802次组卷
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5卷引用:江苏省常州市第一中学2021-2022学年高二上学期期中数学试题
江苏省常州市第一中学2021-2022学年高二上学期期中数学试题(已下线)期中押题预测卷(考试范围:第1-3章)(拔高卷)-【单元测试】2022-2023学年高二数学分层训练AB卷(苏教版2019选择性必修第一册)江苏省南京市燕子矶中学2022-2023学年高二上学期9月期初测试数学试题(已下线)第28讲 圆锥曲线存在性问题-【同步题型讲义】2022-2023学年高二数学同步教学题型讲义(人教A版2019选择性必修第一册)(已下线)第13讲 抛物线(9大考点)(1)
名校
解题方法
6 . 已知点
,不垂直于x轴的直线l与椭圆
相交于
,
两点.
(1)若M为线段AB的中点,证明:
;
(2)设C的左焦点为F,若M在∠AFB的角平分线所在直线上,且l被圆
截得的弦长为
,求l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f168123e5e9d8245c175dd6259eb3d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd1995c683ea622f150942ff32e4f1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
(1)若M为线段AB的中点,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed499b34d527d32e9249b6805b5a93fa.png)
(2)设C的左焦点为F,若M在∠AFB的角平分线所在直线上,且l被圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
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964次组卷
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5卷引用:江苏省南京市第一中学2021-2022学年高三上学期期中数学试题
江苏省南京市第一中学2021-2022学年高三上学期期中数学试题重庆市第八中学2021届高三下学期高考适应性考试(三)数学试题四川省南充高级中学2021-2022学年高三上学期第三次月考数学(文)试题(已下线)专题27 圆锥曲线点差法必刷100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)(已下线)重难点11九种直线和圆的方程的解题方法-3
解题方法
7 . 已知离心率为
的椭圆
与直线x+2y-4=0有且只有一个公共点.
(1)求椭圆C的标准方程;
(2)设过点P(0,-2)的动直线l与椭圆C相交于A,B两点,当坐标原点O位于以AB为直径的圆外时,求直线l斜率的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
(1)求椭圆C的标准方程;
(2)设过点P(0,-2)的动直线l与椭圆C相交于A,B两点,当坐标原点O位于以AB为直径的圆外时,求直线l斜率的取值范围.
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2021-12-11更新
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609次组卷
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5卷引用:江苏省连云港市2021-2022学年高三上学期期中数学试题
江苏省连云港市2021-2022学年高三上学期期中数学试题江苏省盐城市滨海县东元高级中学、射阳高级中学等三校2022-2023学年高二上学期期中数学试题(已下线)热点09 解析几何-2022年高考数学【热点·重点·难点】专练(新高考专用)(已下线)押全国卷(理科)第20题 圆锥曲线-备战2022年高考数学(理)临考题号押题(全国卷)第3章 椭圆方程及性质(基础卷)-【满分计划】2022-2023学年高二数学阶段性复习测试卷(苏教版2019选择性必修第一册)
8 . 已知椭圆E:
(a>b>0)的右焦点坐标为F
,过F的直线l交椭圆于A,B两点,当A与上顶点重合时,
.
(1)求椭圆E的方程;
(2)若点P
,记直线PA,PB的斜率分别为
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623afc24f2227004b0e1b3922dfb954b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2171a7e806dc496b06bfe0a3a043e1.png)
(1)求椭圆E的方程;
(2)若点P
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a41261c5f84ff0863f4a1bc1a39f0cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
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2021-12-11更新
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4卷引用:江苏省镇江市丹阳市2021-2022学年高二上学期期中数学试题
9 . 在①点M为椭圆C上顶点时,
面积为
,②椭圆
过点
,③离心率
,这三个条件中任选一个,补充在下面(横线处)问题中,解决下面两个问题.设椭圆
的左、右焦 点分别为
,
,直线
与椭圆C交于A,B两点,以AB为底边作等腰三角形,顶点为P(-3,2). 已知椭圆
的短轴长为
,________.
(1)求椭圆C的方程;
(2)求m的值和△PAB的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42fc33bcfc63ec2f4940ccd3f862400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf2d3421512a7ada37afca25e349b37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234e7679481ec0d01c915b7fbb71891d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00a5df9d281dd4e1e45bf6a4d6fb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
(1)求椭圆C的方程;
(2)求m的值和△PAB的面积.
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名校
10 . 设椭圆
的左焦点为
,上顶点为
.已知椭圆的短轴长为4,离心率为
.
(1)求椭圆的方程;
(2)设点
在椭圆上,且异于椭圆的上、下顶点,点
为直线
与
轴的交点,点
且
(
为原点),求直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/dee14db57f0c762aad845cf5b4a243c0.png)
(1)求椭圆的方程;
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fef26f14e6a51c897b4dd93c72ad133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c922f835c095ce76ccef75e396b1cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
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2021-12-05更新
|
319次组卷
|
3卷引用:江苏省镇江市句容实验高中、丹徒高中、扬中二中三校2021-2022学年高二上学期期中联考数学试题