1 . 已知椭圆
,直线
与椭圆交于P,Q两点,设线段
的中点为M,点O为坐标原点,且
,则直线
的斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61efb6625b358d5e62f7fc28d230382d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0985b973395bcd371cd1e26d3fcd1c36.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/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-01-09更新
|
134次组卷
|
2卷引用:安徽省合肥市第六中学2020-2021学年高二上学期诊断性测试数学(理)试题
名校
解题方法
2 . 设椭圆
的离心率为
,圆
与
轴正半轴交于点
,圆
在点
处的切线被椭圆
截得的弦长为
.
(1)求椭圆
的方程;
(2)设圆
上任意一点
处的切线交椭圆
于点
,
,试判断
是否为定值?若为定值,求出该定值;若不是定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c080a16c0630a8d8f5e03b026a5e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.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/1dde8112e8eb968fd042418dd632759e.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/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/c1d6cf85eb0936a2e504a32f01bead5c.png)
您最近一年使用:0次
2020-09-22更新
|
654次组卷
|
15卷引用:【市级联考】安徽省合肥市2019届高三第一次教学质量检测数学理试题
【市级联考】安徽省合肥市2019届高三第一次教学质量检测数学理试题【市级联考】安徽省合肥市2019届高三一模数学(理)试题湖北省十堰市2019届高三模拟试题理科数学学科【全国百强校】湖南师大附中2018-2019高二第一学期第一次阶段性检测数学理科试题【市级联考】四川省乐山市高中2019届高三第三次调查研究考试数学理试题2020届陕西省西安中学高三第二次模拟数学(理)试题山西省长治市太行中学2018-2019学年高二下学期期末数学(理)试题2019届河南省驻马店市西平高中高三数学模拟(理科)试题山东省肥城一中2019-2020学年高三3月月考在线数学试题(已下线)理科数学-6月大数据精选模拟卷05(新课标Ⅲ卷)(满分冲刺篇)(已下线)强化卷09(4月)-冲刺2020高考数学之拿高分题目强化卷(山东专版)福建省厦门市双十中学2019-2020学年高二(下)期中数学试题安徽省安庆七中2020届高三下学期仿真模拟冲刺卷(二)数学(文)试题陕西省西安中学2021届高三第一次仿真考试数学(理)试题山西省山西大学附中2018-2019学年高三下学期3月模块诊断数学(理)试题
名校
解题方法
3 . 已知圆
,圆内一定点
,圆
过
且与圆
内切.
(1)求圆心
的轨迹方程
;
(2)若轨迹方程
的右顶点为
轴上一异于
点的
,其中
,过
作不平行
轴的直线
与
交于
两点,连接
,求
取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252d280632c229295b5c982ffce72893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e68be4650335e0a14e2357fcc21461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)求圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若轨迹方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac9553c16604811bd1462fab8e8319a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432aae51854129e8c10f7c34c0c3a79f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598a67a25442f8c5bd4a51f9902ff80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d8597613c913ed51a7f863a8cd6b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa3214942e53269afaf15240319b14c.png)
您最近一年使用:0次
名校
4 . 已知椭圆
,椭圆
的焦点在
轴上,且与椭圆
离心率相同,且椭圆
经过点
.
(1)求椭圆
的方程;
(2)若点
在椭圆
上,过点
分别作椭圆
的切线,切点分别是
,此两条切线分别与椭圆
相交
两点,证明:切点
分别是线段
,线段
的中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfaca352d579b991428b3d794c91484c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc94fc891d8338f89f75ca900126eed.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
您最近一年使用:0次
5 . 已知椭圆
的方程为
,斜率为
的直线
与椭圆
交于
,
两点,点
在直线
的左上方.
(1)若以
为直径的圆恰好经过椭圆右焦点
,求此时直线
的方程;
(2)求证:
的内切圆的圆心在定直线
上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)若以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
您最近一年使用:0次
名校
6 . 设椭圆
的长轴长
,离心率为
,定义直线
为椭圆的类准线,若椭圆C的类准线方程为
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/0c0b5bba-283d-4b0a-b5dc-195b9d84e9a2.png?resizew=162)
(1)求椭圆C的方程;
(2)如图,不垂直于x轴的直线
与椭圆C交于A、B两点,点
在直线l的左上方,且
,直线PA、PB分别与y轴交于点M、N,若线段MN长度是4,求k.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3337ce20986618e4c9ba74063c5aa3d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7e850fd3db1a8ae7082557fb344de0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/0c0b5bba-283d-4b0a-b5dc-195b9d84e9a2.png?resizew=162)
(1)求椭圆C的方程;
(2)如图,不垂直于x轴的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32838e41c93a5aa10d2ce2d023d8b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
您最近一年使用:0次
名校
解题方法
7 . 已知椭圆C:
(
)的两焦点与短轴两端点围成面积为12的正方形.
(1)求椭圆C的标准方程;
(2)我们称圆心在椭圆上运动,半径为
的圆是椭圆的“卫星圆”.过原点O作椭圆C的“卫星圆”的两条切线,分别交椭圆C于A、B两点,若直线
、
的斜率为
、
,当
时,求此时“卫星圆”的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
(1)求椭圆C的标准方程;
(2)我们称圆心在椭圆上运动,半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc8b26fb79c1f4d36130c41b18c0f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.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/53232bf832d02c32acd9983ba974a98b.png)
您最近一年使用:0次
2020-02-27更新
|
710次组卷
|
5卷引用:安徽省合肥市一六八中学2019-2020学年高三下学期第三次教学质量理科数学试题
名校
解题方法
8 . 已知椭圆
的一个焦点与抛物线
的焦点重合,且抛物线的准线被椭圆
截得的弦长为1,
是直线
上一点,过点
且与
垂直的直线交椭圆于
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/d65e65fe-ce2c-45a2-a05b-60637cced1c6.png?resizew=218)
(1)求椭圆
的标准方程;
(2)设直线
的斜率分别为
,求证:
成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4856428c4f87eada4e504fce8cc91d1e.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/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a29ba49963134a7232fa8574105fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/d65e65fe-ce2c-45a2-a05b-60637cced1c6.png?resizew=218)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f787aa6043d34a6fdd225637e8fc6f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8662be7d259210ad509ceac151d063c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8662be7d259210ad509ceac151d063c6.png)
您最近一年使用:0次
9 . 若直线
与抛物线
交于
两个不同的点,抛物线的焦点为
,且
成等差数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d8041c797b98b834c70dbf7d1d4346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3165071b658b916476f06efc36fdd165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-14更新
|
409次组卷
|
4卷引用:安徽省合肥市庐阳区合肥六中、合肥八中、阜阳一中、淮北一中四校2019-2020学年高二上学期期末数学(理)试题
真题
名校
10 . 已知椭圆的中心为原点
,长轴在
轴上,上顶点为
,左、右焦点分别为
,线段
的中点分别为
,且△
是面积为4的直角三角形.
(Ⅰ)求该椭圆的离心率和标准方程;
(Ⅱ)过
作直线
交椭圆于
,
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787e048d8e5402c223678e39d11b121c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d468be20b4d43f5de75416de20e8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1acf532db82b97a574517f5a2fae5f58.png)
(Ⅰ)求该椭圆的离心率和标准方程;
(Ⅱ)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
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17卷引用:安徽省合肥庐阳高级中学2017-2018学年高二(上)期末考试理科数学试题
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