解题方法
1 . 如图,椭圆
的右焦点为
,右顶点、上顶点分别为点
且
.
![](https://img.xkw.com/dksih/QBM/2016/3/1/1572507975041024/1572507981283328/STEM/b59589581b1d449f9a20ab60e9753f27.png?resizew=196)
(1)求椭圆的离心率;
(2)若点
在椭圆
内部,过点
的直线
交椭圆
于
两点,
为线段
的中点,且
.求直线
的方程及椭圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebe2973467a921e861a12471ec8496e.png)
![](https://img.xkw.com/dksih/QBM/2016/3/1/1572507975041024/1572507981283328/STEM/b59589581b1d449f9a20ab60e9753f27.png?resizew=196)
(1)求椭圆的离心率;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fcb05e9c3ff28374caa42318fc81537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7df99fe6438442a9453fc0c57fb703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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名校
解题方法
2 . 已知F1、F2是椭圆
的左、右焦点,A是椭圆上位于第一象限内的一点,点B也在椭圆上,且满足
(O是坐标原点),
若椭圆的离心率等于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08596ab7ad94031331c93db6f9ec549.png)
(1)求直线AB的方程;
(2)若三角形ABF2的面积等于
,求椭圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0dce10bf671cc2ebc67aa7fd568a9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052196b09e64a47bf3c7b0c0afb815df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c1d00c491e1f2fe8a087c8ac370a96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08596ab7ad94031331c93db6f9ec549.png)
(1)求直线AB的方程;
(2)若三角形ABF2的面积等于
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572486827311104/1572486833291264/STEM/9f2bb207d85f4f98b9247bd08e702eb1.png?resizew=36)
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2016-12-04更新
|
410次组卷
|
2卷引用:河北省隆化县存瑞中学2019届高三上学期第二次质检数学(文)试题
3 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319bdd02464019827584973e66e9b8ab.png)
(
)的离心率为
,左、右焦点分别为
、
,点
在椭圆
上,且
,
的面积为
.
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572452025262080/1572452031635456/STEM/78381483dd9c4ccaa02a69b66b778f4b.png)
(1)求椭圆
的方程;
(2)直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a461995b90655f5133df6f61c2d09bd.png)
(
)与椭圆
相交于
,
两点,点
,记直线
,
的斜率分别为
,
,当
最大时,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319bdd02464019827584973e66e9b8ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9374d3462754e846cbb0f7dd5fd28277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aac1391edae471b8d48d2d70d17f466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195a7dca9e2f7e7f29b46b22b17d7772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c783bab7586f60dc14d4f10b6d5b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71d464c358d4ad4a2aad019d667af8c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfb30897636b737e13f0abbdf831560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572452025262080/1572452031635456/STEM/78381483dd9c4ccaa02a69b66b778f4b.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a461995b90655f5133df6f61c2d09bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5510207df7154e4f25fbe8722441313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3416661c265aa5dc7a099a95e2a55a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa5694373bd78b1ca2180f831bf1c8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2252dec4cf2fd59caff617269567806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f6a29d7fc7cd486dd3667c420176d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6321b1b15b47a98a86268229633daf77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9344dfa876a21ad6909eb449cda7dfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0881ecc3a18a3ca781517a0746be9066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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解题方法
4 . 已知椭圆C:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的离心率为
,长轴长为8.
(Ⅰ)求椭圆C的标准方程;
(Ⅱ)若不垂直于坐标轴的直线
经过点P(m,0),与椭圆C交于A,B两点,设点Q的坐标为(n,0),直线AQ,BQ的斜率之和为0,求
的值.
![](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/059d02ae074c7c2f7dfde8058dfa55ab.png)
(Ⅰ)求椭圆C的标准方程;
(Ⅱ)若不垂直于坐标轴的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1019d4ad2e3fb4a7abb66e0e9e55b556.png)
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5 . 如下图,已知点
是离心率为
的椭圆
:
上的一点,斜率为
的直线
交椭圆
于
、
两点,且
、
、
三点互不重合.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/bb02c0a3-28dd-4754-87e5-4b95fccbf568.png?resizew=152)
(1)求椭圆
的方程;
(2)求证:直线
,
的斜率之和为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58aab742dcee01ea15f2a74fbee0c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb223b8777ab973970491bf0dcc6806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/bb02c0a3-28dd-4754-87e5-4b95fccbf568.png?resizew=152)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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2016-12-03更新
|
1612次组卷
|
9卷引用:2015届河北省正定中学高三1月月考文科数学试卷
2015届河北省正定中学高三1月月考文科数学试卷2015届山东师大附中高三第九次模拟考试文科数学试卷2017届河南南阳一中高三文上学期月考四数学试卷(已下线)黄金30题系列 高三年级数学(文) 大题好拿分【基础版】湖北省荆门市钟祥市实验中学2020-2021学年高二下学期3月月考数学试题(已下线)专题6.1 期中押题检测卷(考试范围:第1-3章) 1(易)-【满分计划】2021-2022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)天津市南开区2021-2022学年高二上学期期末数学试题第三章 圆锥曲线的方程单元测试(基础版)-【新教材优创】突破满分数学之2022-2023学年高二数学重难点突破+课时训练 (人教A版2019选择性必修第一册)黑龙江省佳木斯市三校联考2023-2024学年高二上学期期末数学试题
6 . 椭圆
上一点
关于原点的对称点为
,
为其左焦点,若
,设
,则该椭圆的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c507610f462120218e2cd1894c957eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314e333f8c516af25603dcd9079eadb2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-03更新
|
2056次组卷
|
2卷引用:2015届河北省冀州中学高三12月调研考试文科数学试卷
2014·河北唐山·一模
解题方法
7 . 椭圆C:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的离心率为
,
为C的长轴上的一个动点,过P点斜率为
的直线l交C于A、B两点.当m=0时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0ed28c7bbb0738f0c38966f1e516ed.png)
(1)求C的方程;
(2)求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84bfec4efcc9f0e656d6864daaaef55d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0ed28c7bbb0738f0c38966f1e516ed.png)
(1)求C的方程;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd67e60d0e2614c3b8bee9101f1f5263.png)
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13-14高二下·河北唐山·期末
名校
8 . 已知椭圆
的离心率为
,过顶点
的直线
与椭圆
相交于两点
.
(1)求椭圆
的方程;
(2)若点
在椭圆上且满足
,求直线
的斜率
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a2b8b43e1fe82fc439d145e91b860c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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/ff01fe4e8f176ac1ec86f5218ab53af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2016-12-03更新
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1361次组卷
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4卷引用:河北省承德市第一中学2019-2020学年高三上学期12月月考数学(理)试题
河北省承德市第一中学2019-2020学年高三上学期12月月考数学(理)试题(已下线)2013-2014学年河北唐山一中高二下学期期末考试文科数学试卷【市级联考】甘肃省白银市2019届高三模拟(4月)数学(文)试题(已下线)2020届高三12月第02期(考点08)(理科)-《新题速递·数学》
12-13高三上·河北石家庄·期末
9 . 已知焦点在y轴上的椭圆
经过A(1,0)点,且离心率为
.
(I)求椭圆C1的方程;
(Ⅱ)过抛物线C2:
(h∈R)上P点的切线与椭圆C1交于两点M、N,记线段MN与PA的中点分别为G、H,当GH与y轴平行时,求h的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ee93bb49bfab01823b54a47b971d9d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(I)求椭圆C1的方程;
(Ⅱ)过抛物线C2:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e31401ce101641b9022a4c6a191d88d.png)
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2011·河北衡水·三模
10 . 已知椭圆
的左、右焦点为
,过点
斜率为正数的直线交椭圆与
两点,且
成等差数列.
(Ⅰ)求
的离心率;
(Ⅱ)若直线y=kx(k<0)与
交于C、D两点,求使四边形ABCD面积S最大时k的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bfa5840675e634a9f5e1f602775e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e9299df71f8956803dddfb4f5c8bf4.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(Ⅱ)若直线y=kx(k<0)与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
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