解题方法
1 . 已知直线
与椭圆
交于
两点,且椭圆过
两点,
为坐标原点.
(1)求椭圆方程;
(2)求
面积的最大值,及此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16535d128f9c0bd7868cb0fbc78f676d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求椭圆方程;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2 . 已知椭圆C的中心在坐标原点,焦点在x轴上,左顶点为A,左焦点为
,点
在椭圆C上,直线
与椭圆C交于E,F两点,直线AE,AF分别与y轴交于点M,N
Ⅰ
求椭圆C的方程;
Ⅱ
在x轴上是否存在点P,使得无论非零实数k怎样变化,总有
为直角?若存在,求出点P的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2a3a20f2715f640eab19553ee20395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57263eb46061de34df3c52814cfc1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c42d7b8e1d3221fc8b8074c9a090270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba441131061f773ab758b740dae3ad9f.png)
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2016-12-04更新
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名校
3 . 已知椭圆
的离心率
,焦距是
.
(1)求椭圆的方程;
(2)若直线
与椭圆交于
、
两点,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234e7679481ec0d01c915b7fbb71891d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9586bf8eb327590b4325f208b791f3c3.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/4a3752dcd6acee76ff29659d2a18064f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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13卷引用:2015-2016学年河北省迁安市二中高二上学期期末考试理科数学试卷
2015-2016学年河北省迁安市二中高二上学期期末考试理科数学试卷(已下线)2018年11月21日 《每日一题》理数人教选修2-1-直线与椭圆的位置关系(已下线)2018年11月21日 《每日一题》文数人教选修1-1-直线与椭圆的位置关系(已下线)2019年1月9日 《每日一题》理数(高二上期末复习)人教必修5+选修2-1-直线与圆锥曲线的位置关系新疆阿勒泰地区2019-2020学年高二下学期期末考试数学(文科)试题新疆阿勒泰地区2019-2020学年高二下学期期末考试数学试题(A卷)吉林省辽源市田家炳高级中学校2020-2021学年高二上学期第一次月考数学(理)试题河南省郑州市新密市第一高级中学2020-2021学年高二下学期期末数学文科试题上海财经大学附属中学2022-2023学年高二下学期期中数学试题黑龙江省哈尔滨市呼兰区第一中学2019届高三上学期第三次(12月)月考数学(文)试题黑龙江省哈尔滨市呼兰区第一中学2019届高三上学期第三次(12月)月考数学(理)试题西藏自治区林芝市第二高级中学2021届高三上学期第二次月考数学(文)试题(已下线)二轮拔高卷05-【赢在高考·黄金20卷】备战2022年高考数学(文)模拟卷(全国卷专用)
4 . 已知点
,
是圆
(
为圆心)上的动点,
的垂直平分线与
交于点
.
(1)求动点
的轨迹方程;
(2)设直线
与
的轨迹交于
,
两点,且以
为对角线的菱形的一顶点为(-1,0),求:
面积的最大值及此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5891e734c5495b95941860ea96983bf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23198c704e05c1750e99c5e9c76431b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302b387790f8d3fdfe7859e339da5703.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17bcffba755a9cb6e159baf59ebeb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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5 . 椭圆E:
+
=1(a>b>0)的左焦点为F1,右焦点为F2,离心率e=
.过F1的直线交椭圆于A,B两点,且△ABF2的周长为8.
(1)求椭圆E的方程.
(2)在椭圆E上,是否存在点M(m,n)使得直线l:mx+ny=1与圆O:x2+y2=1相交于不同的两点P,Q,且△POQ的面积最大?若存在,求出点M的坐标及相对应的△POQ的面积;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2016/3/17/1572544751599616/1572544757235712/STEM/b736922adb854087b12583853ceba036.png)
![](https://img.xkw.com/dksih/QBM/2016/3/17/1572544751599616/1572544757235712/STEM/d7337e1193d44654a9dbe8d33f8bcf05.png)
![](https://img.xkw.com/dksih/QBM/2016/3/17/1572544751599616/1572544757235712/STEM/fa76b58355c14591935653eb0f96639b.png)
(1)求椭圆E的方程.
(2)在椭圆E上,是否存在点M(m,n)使得直线l:mx+ny=1与圆O:x2+y2=1相交于不同的两点P,Q,且△POQ的面积最大?若存在,求出点M的坐标及相对应的△POQ的面积;若不存在,请说明理由.
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6 . 已知椭圆C的焦点坐标为F1(﹣2,0)和F2(2,0),一个短轴顶点
.
(1)求椭圆C的标准方程;
(2)已知过F1的直线与椭圆相交于A、B,倾斜角为45度,求△ABF2的面积.
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572532943994880/1572532949852160/STEM/0bd31305b4034aa18a48116c7da6b719.png)
(1)求椭圆C的标准方程;
(2)已知过F1的直线与椭圆相交于A、B,倾斜角为45度,求△ABF2的面积.
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7 . 如图所示,曲线C由部分椭圆C1:
+
=1(a>b>0,y≥0)和部分抛物线C2:y=-x2+1(y≤0)连接而成,C1与C2的公共点为A,B,其中C1所在椭圆的离心率为
.
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496698941440/1572496704929792/STEM/cdf68191c81b4726a0d5f10d2fb03c1b.png?resizew=186)
(1)求a,b的值;
(2)过点B的直线l与C1,C2分别交于点P,Q(P,Q,A,B中任意两点均不重合),若AP⊥AQ,求直线l
的方程.
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496698941440/1572496704929792/STEM/4bf18499006e4a03ae2ccb61326ec74a.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496698941440/1572496704929792/STEM/b34bc48c189143e68f5bf7b8cf88a115.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496698941440/1572496704929792/STEM/e18b48e6f796418887ab8b738a8a505d.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496698941440/1572496704929792/STEM/cdf68191c81b4726a0d5f10d2fb03c1b.png?resizew=186)
(1)求a,b的值;
(2)过点B的直线l与C1,C2分别交于点P,Q(P,Q,A,B中任意两点均不重合),若AP⊥AQ,求直线l
的方程.
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8 . 已知
是椭圆的
左、右焦点,过点
作倾斜角为
的
动直线
交椭圆于
两点.当
时,
,且
.
(1)求椭圆的离心率及椭圆的标准方程;
(2)求
面积的最大值,并求出使面积达到最大值时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f7d5b1f1603ec8065777af68c1b7b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ec56b59d6f2654570c2b5c4fd13a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ab55147ca5c0f958af43b0637ee31b.png)
动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da2d7c12c9fb370bb438e8ae38dfd2ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f517c0d4d51920e4a9708157784093d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689b553f14ed5d5015ab85ee3b90e871.png)
(1)求椭圆的离心率及椭圆的标准方程;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f3f7cb120477b49faa001514887e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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9 . 已知抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a259dddccc3cfe8f81735cd5834785d.png)
的焦点为
,抛物线上存在一点
到焦点的距离为
,且点
在圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
上.
(1)求抛物线
的方程;
(2)已知椭圆![](https://img.xkw.com/dksih/QBM/2016/2/16/1572480207028224/1572480212893696/STEM/a342219be3974d1e81a697ad8669a263.png)
的一个焦点与抛物线
的焦点重合,且离心率为
.直线
交椭圆
于
、
两个不同的点,若原点
在以线段
为直径的圆的外部,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a259dddccc3cfe8f81735cd5834785d.png)
![](https://img.xkw.com/dksih/QBM/2016/2/16/1572480207028224/1572480212893696/STEM/74ac33c350cc468ba17dd1b713bc713e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08227ca941898eb34941f446ca8b1de8.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)已知椭圆
![](https://img.xkw.com/dksih/QBM/2016/2/16/1572480207028224/1572480212893696/STEM/a342219be3974d1e81a697ad8669a263.png)
![](https://img.xkw.com/dksih/QBM/2016/2/16/1572480207028224/1572480212893696/STEM/05b76d0af77f4e04a293eda1f032186d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d2c0c5867d7464359df57327f7f731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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10 . 在平面直角坐标系
中,点
到两点
的距离之和等于4,设点
的轨迹为
.
(1)写出曲线
的方程;
(2)设直线
与曲线
交于A、B两点,
为何值时,
,此时
的值为多少?
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/f8c01c92f0d540f48693963255321cf6.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/481a972a4f734ae9abc2e6d9e70b657a.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/53c5f8b6400947d2b530a596209442d0.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/481a972a4f734ae9abc2e6d9e70b657a.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/50951a7163fd40e59675c66b0696dc6a.png)
(1)写出曲线
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/50951a7163fd40e59675c66b0696dc6a.png)
(2)设直线
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/165914d03fb340158cad4a9fac8599d1.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/50951a7163fd40e59675c66b0696dc6a.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/d120abc7835d4b13bb99e0f9b4077043.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/ee48e84639dd494582b88d9fb5c41a15.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/ae22ed73454c423f9502340b04d8f477.png)
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