名校
1 . 已知椭圆
的左焦点为
,点
是椭圆
的上顶点,直线
与椭圆
交于
,
两点.若点
到直线
的距离是1,且
不超过6,则椭圆
的离心率的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b584ef432bc03a383ed40ca2e120e45.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd3adfb8ef95245d7d073de76ceb053a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-09更新
|
855次组卷
|
5卷引用:河南省新乡市2019-2020学年高二上学期期末数学(文科)试题
名校
2 . 已知椭圆
的离心率为
,抛物线
的焦点是
,
是抛物线上的点,H为直线
上任一点,A,B分别为椭圆C的上、下顶点,且A,B,H三点的连线可以构成三角形.
(Ⅰ)求椭圆C的方程;
(Ⅱ)直线HA,HB与椭圆C的另一交点分别为点D,E,求证:直线DE过定点.
![](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/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d66e9d52546beeea016d6d7d3f0ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf6fabf79f2421b74d04c20405fdc81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af31a8d791f28399fc13be3250136dc.png)
(Ⅰ)求椭圆C的方程;
(Ⅱ)直线HA,HB与椭圆C的另一交点分别为点D,E,求证:直线DE过定点.
您最近一年使用:0次
2020-02-09更新
|
594次组卷
|
11卷引用:江西省上高县二中2018-2019学年高二下学期期末数学(文)试题
江西省上高县二中2018-2019学年高二下学期期末数学(文)试题河南省濮阳市2019-2020学年高二上学期期末数学(理)试题湖南省三湘名校教育联盟2018届高三第三次联考数学(理)试题湖南省三湘名校教育联盟2018届高三第三次联考数学(文)试题(已下线)《高频考点解密》—解密22 直线与圆锥曲线的位置关系(已下线)解密20 直线与圆锥曲线的位置关系-备战2018年高考文科数学之高频考点解密【全国百强校】福建省三明市第一中学2018届高三模拟卷(二)数学(理)试题(已下线)2018年11月19日 《每日一题》文数人教版一轮复习-直线与椭圆的位置关系(2)(已下线)2019年11月18日《每日一题》一轮复习文数-直线与椭圆的位置关系(2)人教A版(2019) 选择性必修第一册 过关斩将 第三章 圆锥曲线的方程 专题强化练10 定点、定值及探究性问题的解法(已下线)专题10 圆锥曲线的方程-定点、定值及探究性问题的解法-2021-2022学年高二数学同步练习和分类专题教案(人教A版2019选择性必修第一册)
3 . 如图,
、
是离心率为
的椭圆
:
的左、右焦点,过
作
轴的垂线交椭圆
所得弦长为
,设
、
是椭圆
上的两个动点,线段
的中垂线与椭圆
交于
、
两点,线段
的中点
的横坐标为1.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/4aa2066b-2b87-4f10-9816-38296b5b0bab.png?resizew=241)
(1)求椭圆
的方程;
(2)求
的取值范围.
![](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/8d5989c84e320b504511f23eeb6e7357.png)
![](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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/4aa2066b-2b87-4f10-9816-38296b5b0bab.png?resizew=241)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dcbf1ba7f9bc7d6bff898f3274b1c85.png)
您最近一年使用:0次
2020-02-09更新
|
370次组卷
|
2卷引用:重庆市部分区县2018-2019学年高二上学期期末测试数学(理)试题
解题方法
4 . 如图所示,取同离心率的两个椭圆成轴对称内外嵌套得一个标志,为美观考虑,要求图中标记的①、②、③)三个区域面积彼此相等.(已知:椭圆面积为圆周率与长半轴、短半轴长度之积,即椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
面积为
)
![](https://img.xkw.com/dksih/QBM/2020/2/4/2392011465678848/2393069658415104/STEM/f904b8b06a1b458184d295b952ff57bc.png?resizew=190)
(1)求椭圆的离心率的值;
(2)已知外椭圆长轴长为6,用直角角尺两条直角边内边缘与外椭圆相切,移动角尺绕外椭圆一周,得到由点M生成的轨迹将两椭圆围起来,整个标志完成.请你建立合适的坐标系,求出点M的轨迹方程.
![](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/d30c9fb43b60653928f2a5381a0e638a.png)
![](https://img.xkw.com/dksih/QBM/2020/2/4/2392011465678848/2393069658415104/STEM/f904b8b06a1b458184d295b952ff57bc.png?resizew=190)
(1)求椭圆的离心率的值;
(2)已知外椭圆长轴长为6,用直角角尺两条直角边内边缘与外椭圆相切,移动角尺绕外椭圆一周,得到由点M生成的轨迹将两椭圆围起来,整个标志完成.请你建立合适的坐标系,求出点M的轨迹方程.
您最近一年使用:0次
2020-02-06更新
|
350次组卷
|
2卷引用:2020届辽宁省实验中学、大连八中、大连二十四中、鞍山一中、东北育才学校高三上学期期末数学(文)试题
5 . 已知椭圆
:
与直线
:
,
:
,过椭圆上的一点
作
,
的平行线,分别交
,
于
,
两点,若
为定值,则椭圆
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d585d2d6643471640905d234d9538c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38cd2a180ae300bbf2388a709e4c28e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
解题方法
6 . 已知椭圆C:
(
)的左、右焦点分别为
,
,离心率
,点
在椭圆C上,直线l过
交椭圆于A,B两点.
(1)求椭圆C的标准方程;
(2)当
时,点A在x轴上方时,求点A,B的坐标;
(3)若直线
交y轴于点M,直线
交y轴于点N,是否存在直线l,使得
与
的面积满足
,若存在,求出直线l的方程;若不存在,请说明理由.
![](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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5f4493abd2b69f83eae0362c509f1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(1)求椭圆C的标准方程;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa3c28807587e623ffac188caa94c46.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3656055f5256cd06e636ea96e9f89c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5e56b5cbcf69756792fc934bcc20cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094178ad07dffcab850c964fd3b51b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be9586a20b6a2796ea59f6962009732.png)
您最近一年使用:0次
7 . 已知椭圆
.
(1)求椭圆
的短轴长和离心率;
(2)过点
的直线
与椭圆
相交于两点
,
,设
的中点为
,点
,判断
与
的大小,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1b4d114a7dadbed65e454b9e427854.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa2e31608e60e3fd40c040cfe9d6e8e.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/277c5edd8134b666c80644af134bfa49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324e97830480091f58128d6cbceaf17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169c5911ed827f65bdebb915fceff7f6.png)
您最近一年使用:0次
8 . 已知椭圆
:
过点
,过坐标原点
作两条互相垂直的射线与椭圆
分别交于
,
两点.
(1)证明:当
取得最小值时,椭圆
的离心率为
.
(2)若椭圆
的焦距为2,是否存在定圆与直线
总相切?若存在,求定圆的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311dbbc95c35e023fb721d53c8dfc2db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2020-02-01更新
|
1396次组卷
|
11卷引用:2020届河南省高三上学年期末数学(文科)试题
2020届河南省高三上学年期末数学(文科)试题2020届河南省高三上学期末数学理科试题2020届河南省高三3月联合检测数学(文科)试题2020届河南省高三3月联合检测数学(理科)试题2020届河南省驻马店市高三第二次模拟测试数学(理科)试题2020届河南省驻马店市高三第二次模拟测试数学(文科)试题(已下线)专题05 圆锥曲线中的证明问题、探究性问题(第五篇)-2020高考数学压轴题命题区间探究与突破陕西省汉中市重点中学2019-2020学年高三下学期4月开学第一次联考数学(文)试题(已下线)专题01 解析几何(第三篇)-备战2020高考数学黄金30题系列之压轴题(新课标版)(已下线)专题09 解析几何中的探索性问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖吉林省通钢一中、集安一中、梅河口五中等省示范高中2020届高三(5月份)高考数学(文科)模拟试题
9 . 设椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c870c7cf541f0910388a4bdc866014a.png)
的离心率是
,直线
被椭圆C截得的弦长为
.
(1)求椭圆C的方程;
(2)已知点
,斜率为
的直线l与椭圆C交于不同的两点A,B,当
的面积最大时,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c870c7cf541f0910388a4bdc866014a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆C的方程;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e3e694d6f8af2589e3c12dead783b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
您最近一年使用:0次
2020-02-01更新
|
715次组卷
|
8卷引用:2020届云南省楚雄州高三上学期期末考试数学(理)试题
10 . 在平面直角坐标系
中,已知椭圆
的右顶点为
,过点
作直线
与圆
相切,与椭圆
交于另一点
,与右准线交于点
.设直线
的斜率为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/e647ba24-79b1-47d3-a954-0e9b757766fe.png?resizew=183)
(1)用
表示椭圆
的离心率;
(2)若
,求椭圆
的离心率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b4bcb812c997db47214cb52c905f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/e647ba24-79b1-47d3-a954-0e9b757766fe.png?resizew=183)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0fb02846c1f030d0a4a7415a4aa788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2020-01-31更新
|
506次组卷
|
2卷引用:2020届江苏省徐州市高三上学期第一次质量抽测数学试题