1 . 已知椭圆
的左右焦点分别为
,离心率为
;圆
过椭圆
的三个顶点.过点
且斜率不为0的直线
与椭圆
交于
两点.
(Ⅰ)求椭圆
的标准方程;
(Ⅱ)证明:在
轴上存在定点
,使得
为定值;并求出该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fac122cf35f88f5a2ac9208d85ee6f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)证明:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13ef2a1eddb1b8211dc9353b8e8c98e.png)
您最近一年使用:0次
2017-11-14更新
|
1490次组卷
|
3卷引用:河南省许昌市2019-2020学年高二上学期期末数学理科试题
2 . 已知椭圆
的离心率为
,且椭圆
上的点到椭圆右焦点
的最小距离为
.
求椭圆
的方程;
过点
且不与坐标轴平行的直线
与椭圆
交于
两点,线段
的中点为
,
为坐标原点,直线
的斜率分别为
若成等差数列,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e8bd26c44ef668b5fac93cc800debe.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34e01955f8c8fe2f0041b35d8d602a7.png)
求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b88b9ccc37bfe0baa39a22bd073ed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac1e84a0b70537cd79abf5e91bb3cc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2017-08-04更新
|
851次组卷
|
2卷引用:2016-2017学年河南省新乡市高二上学期期末考试理数试卷
3 . 已知椭圆
的方程为
,双曲线
的一条渐近线与
轴所成的夹角为
,且双曲线的焦距为
.
![](https://img.xkw.com/dksih/QBM/2017/6/15/1709215159828480/1709523916193792/STEM/b8c5e33e8329476f94977992a4daea03.png?resizew=169)
(1)求椭圆
的方程;
(2)设
分别为椭圆
的左,右焦点,过
作直线
(与
轴不重合)交椭圆于
,
两点,线段
的中点为
,记直线
的斜率为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://img.xkw.com/dksih/QBM/2017/6/15/1709215159828480/1709523916193792/STEM/b8c5e33e8329476f94977992a4daea03.png?resizew=169)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b85b7fea69161055ff26e549088c606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2017-06-15更新
|
960次组卷
|
7卷引用:河南省洛阳市2016-2017学年高二下学期期末考试数学(理)试题
4 . 设椭圆
和双曲线
的公共焦点分别为
,
是这两曲线的交点,则
的外接圆半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81af460f6314806e4cc3f73f3dc18a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fb42f813e658f9a924182df4d5d1a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
A.1 | B.2 | C.![]() | D.3 |
您最近一年使用:0次
名校
5 . 已知椭圆
的离心率为
,且过点
.
(1)求椭圆的标准方程;
(2)直线
交椭圆于
两点,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4579fc16276e1ece969ba6791627c8e9.png)
(1)求椭圆的标准方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc382157318685ce72b496ad621aeb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f557b2bb3c53b6006ec3200428fd2491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2017-03-06更新
|
149次组卷
|
3卷引用:2016-2017学年河南省濮阳市高二上学期期末考试(A卷)文数试卷
名校
6 . 已知右焦点为
的椭圆
与直线
相交于
两点,且
.
(1)求椭圆
的方程;
(2)
为坐标原点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8679d709d10043947119f4456014a64.png)
是椭圆
上不同的三点,并且
为
的重心,试探究
的面积是否为定值.若是,求出这个定值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446e946ee3c0f1527e04f6bddbdd4b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8048c3513eb9cc89ad96a0522a5711de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9ca9ea5c24e205bf7e26d1f5aa49fd.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8679d709d10043947119f4456014a64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2018/2/6/1876312406515712/1877027598180352/STEM/5f0c670d2aad4cf1a0408672411636c0.png?resizew=280)
您最近一年使用:0次
2016-12-04更新
|
1347次组卷
|
9卷引用:河南省周口市2018届高三上学期期末抽测调研数学(理)试题2
名校
7 . 椭圆
,其中
,焦距为2,过点
的直线
与椭圆C交于点A,B,点B在A,M之间.又线段AB的中点的横坐标为
,且
.
(1)求椭圆C的标准方程.
(2)求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363598fd39f2269952dc6ddd1201346c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5a1a2ee471c67aa5264c0991d05421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29874f8c74e181e4d169dd38e297cffc.png)
(1)求椭圆C的标准方程.
(2)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2016-12-03更新
|
959次组卷
|
4卷引用:【校级联考】河南省商丘市九校2018-2019学年高二上学期期末联考数学(理)试题
【校级联考】河南省商丘市九校2018-2019学年高二上学期期末联考数学(理)试题河南省商丘市回民中学2019-2020学年高二期末考试数学(理)试题2015届辽宁省沈阳市高中三年级教学质量监测一理科数学试卷(已下线)专题2.3 椭圆(B卷提升篇)-2020-2021学年高二数学选择性必修第一册同步单元AB卷(新教材人教B版)
12-13高三上·山东济南·期末
名校
解题方法
8 . 已知椭圆
的长轴的一个端点是抛物线
的焦点,离心率是
.
(1)求椭圆E的方程;
(2)过点
,斜率为
的动直线与椭圆
相交于
两点,请问
轴上是否存在点
,使
为常数?若存在,求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4799958085429d68c82b0ab61d0ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
(1)求椭圆E的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2f117dc9adcb8fa7acf25bd2cbf283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7787dfab61ed9830b531da365e592bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2016-12-03更新
|
662次组卷
|
5卷引用:2012届河南省卢氏一高高三上学期期末调研考试理科数学试卷
(已下线)2012届河南省卢氏一高高三上学期期末调研考试理科数学试卷(已下线)2012届山东省济南一中高三上学期期末理科数学试卷天津市北辰区2020-2021学年高二上学期期末检测数学试卷2014-2015学年河北邢台一中高二12月月考文科数学试卷黑龙江省哈尔滨市第六中学2017-2018学年高二3月月考数学(文)试题
2014·全国·一模
9 . 已知椭圆
的中心在坐标原点,焦点在
轴上,离心率为
,椭圆
上的点到焦点距离的最大值为
.
(1)求椭圆
的标准方程;
(2)若过点
的直线
与椭圆
交于不同的两点
,且
,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/dd942084202c455aa68fd4037d05f14b.png)
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/6cb18fb430aa44fda8da8db527bd1dcb.png)
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/aa675e7ed9ce4b48aaa4f0df02334a40.png)
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/dd942084202c455aa68fd4037d05f14b.png)
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/face63512b024dc48fd65078a64237f0.png)
(1)求椭圆
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/dd942084202c455aa68fd4037d05f14b.png)
(2)若过点
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/8243cdae62354f22b91f04ef57efa684.png)
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/b65bad57cd4b43ca9804783c8d91b24e.png)
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/dd942084202c455aa68fd4037d05f14b.png)
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/bea77612bb1c4823a7e5e8867d4fe907.png)
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/abbe786c982246e69b6dcfca2f5a7a85.png)
![](https://img.xkw.com/dksih/QBM/2014/5/30/1571745608867840/1571745614118912/STEM/87426f0c588946e2898e8d8f561ea1a7.png)
您最近一年使用:0次
13-14高三下·广东梅州·阶段练习
名校
10 . 已知椭圆C的中心在原点,一个焦点F(-2,0),且长轴长与短轴长的比为
,
(1)求椭圆C的方程;
(2)设点M(m,0)在椭圆C的长轴上,设点P是椭圆上的任意一点,若当
最小时,点P恰好落在椭圆的右顶点,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da99c7af03730df7a964485b7394c33f.png)
(1)求椭圆C的方程;
(2)设点M(m,0)在椭圆C的长轴上,设点P是椭圆上的任意一点,若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14329b73af66646b981e106896efdc10.png)
您最近一年使用:0次
2016-12-02更新
|
1757次组卷
|
5卷引用:河南省中原名校2016-2017学年高二下期期末检测数学(文)试题