1 . 已知椭圆
,焦距为
,过右焦点F且与x轴垂直的直线被椭圆C截得的线段长为2.
(1)求椭圆C的标准方程;.
(2)设点A、B分别是椭圆C的左、右顶点,P、Q分别是椭圆C和圆O∶
上的动点(P、Q位于y轴两侧),且直线PQ与x轴平行,直线AP、BP分别与y轴交于不同的两点M、N,求证∶QM与QN所在的直线互相垂直.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆C的标准方程;.
(2)设点A、B分别是椭圆C的左、右顶点,P、Q分别是椭圆C和圆O∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,已知椭圆
的离心率为
,以该椭圆上的任意一点和椭圆的左、右焦点
,
为顶点的三角形的周长为
.双曲线
的顶点是椭圆
的焦点,离心率为
.设
为双曲线
上异于顶点的任一点,直线
和
与椭圆
的交点分别为
,
和
,
.
![](https://img.xkw.com/dksih/QBM/2022/1/1/2885353715269632/2886642296594432/STEM/8c00907576fe404d91fe1f055b98a082.png?resizew=251)
(1)求椭圆
和双曲线
的标准方程;
(2)设直线
、
的斜率分别为
、
,求证:
为定值;
(3)是否存在常数
,使得
恒成立?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c6162828793e697cb1ad643b287c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2022/1/1/2885353715269632/2886642296594432/STEM/8c00907576fe404d91fe1f055b98a082.png?resizew=251)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.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/6b881044b5c73db6fcce110525741b02.png)
(3)是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/174fbf6858730b889380c99f1bb1d532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
3 . 已知
、
是椭圆
长轴的两个端点,
、
是椭圆上关于
轴对称的两点,直线
、
的斜率分别为
、
.若椭圆的离心率为
,则
的最小值为( )
![](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/7dd54b9df3402ad91e2d34c40efe0c7a.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8c2d0ed3cffe8f28425cccc85e38bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9691613aae1a69934d3e3d2d599f748.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
21-22高三上·江苏南通·期中
4 . 在平面直角坐标系
中,已知椭圆
的左、右顶点和右焦点分别为
、
和
,直线
与椭圆
交于不同的两点
、
,记直线
、
,
的斜率分别为
、
、
.
(1)求证:
为定值;
(2)若
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279cefeb5c389a37a71e5fd3925f5954.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/29a49c27746887c299cd3f5f6b0ce8ce.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.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/dbf434334b09cc0fdd4e86e84e6ceb00.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58a772ed597c9439d63e0c633b1d4cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfb02e157819a2bdd0f2790cbc825e9.png)
您最近一年使用:0次
2021-12-06更新
|
706次组卷
|
4卷引用:黑龙江省大庆中学2021-2022学年高三上学期期中考试数学(文)试题
黑龙江省大庆中学2021-2022学年高三上学期期中考试数学(文)试题(已下线)江苏省南通市如皋市2021-2022学年高三上学期期中教学质量调研数学试题 黑龙江省双鸭山市第一中学2021-2022学年高三上学期期末考试数学(文)试题第3章 椭圆方程及性质(基础卷)-【满分计划】2022-2023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)
5 . 在平面直角坐标系
中,如图,已知椭圆
的上、下顶点分别为
,
,点
在椭圆
上且异于点
,
,直线
、
与直线
分别交于点
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/6daa494f-3c7e-4411-8ead-87c02cd24f92.png?resizew=174)
(1)设直线
、
的斜率分别为
、
,判断
是否为定值?请证明你的结论;
(2)求线段
长的最小值;
(3)当点
运动时,以
为直径的圆是否经过
轴上的定点?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6d82b2880140b8cdd427288a33e349.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/0c27eda162792128da25f541303a3088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.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/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778c545967c0435ff84a6fe0687daf76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fec96b5e74f5c2915a1d34d0fdeb737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad135b14c9dcd83eab6618d7694c7b0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/6daa494f-3c7e-4411-8ead-87c02cd24f92.png?resizew=174)
(1)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778c545967c0435ff84a6fe0687daf76.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/6b881044b5c73db6fcce110525741b02.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
6 . 已知椭圆
,直线
过椭圆C的左焦点F且交椭圆于A,
两点,线段AB的垂直平分线交x轴于M点,则
的值为___________ ;
取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/087495ff07f70d0685ef225d31947278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df20433bf5b5b17b8ec492a46f579189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38190077c30a3c97a40a8689eb1dc385.png)
您最近一年使用:0次
7 . 已知点
,
,设动点P满足直线PA与PB的斜率之积为
,记动点P的轨迹为曲线E.
(1)求曲线E的方程;
(2)若动直线l经过点
,且与曲线E交于C,D(不同于A,B)两点,问:直线AC与BD的斜率之比是否为定值?若为定值,求出该定值;若不为定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
(1)求曲线E的方程;
(2)若动直线l经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
您最近一年使用:0次
2021-10-24更新
|
1099次组卷
|
5卷引用:黑龙江省鸡西市第一中学校2021-2022学年高二上学期期中数学试题
名校
解题方法
8 . 已知椭圆
过点
,离心率为
,直线
与椭圆
交于点
,
,记直线
,
的斜率分别为
,
.
(1)求椭圆
的方程;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1b6f209d1a805437046ca6ef79dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd40f44c911918ee3638eb1a24bb1bd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893ff0f9b64c66312c37cb7ce90c351d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627094931c642543bd218e2e8f98a343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
您最近一年使用:0次
2021-10-21更新
|
1062次组卷
|
5卷引用:黑龙江省鸡西市鸡东县第二中学2021-2022学年高三上学期期中数学文试题
黑龙江省鸡西市鸡东县第二中学2021-2022学年高三上学期期中数学文试题河南省洛阳市2021-2022学年高三上学期期中文科数学试题北京市工业大学附属中学2021-2022学年高二上学期期中考试数学试题(已下线)第十一章 圆锥曲线专练12—椭圆大题(求值问题)-2022届高三数学一轮复习沪教版(2020) 选修第一册 同步跟踪练习 第2章 2.2.2 第2课时 椭圆性质的应用
9 . 已知
,
分别是椭圆
的左,右焦点,
,当
在
上且
垂直
轴时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/cf5561a6-eee2-4022-bdee-24f7376899f9.png?resizew=229)
(Ⅰ)求
的标准方程;
(Ⅱ)A为
的左顶点,
为
的上顶点,
是
上第四象限内一点,
与
轴交于点
,
与
轴交于点
.求证:四边形
的面积是定值.
![](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/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4428ec56246b35cb87bfe7ed50f0ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a0536ee34fa7e3356ce6a9d4d1b7df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/cf5561a6-eee2-4022-bdee-24f7376899f9.png?resizew=229)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(Ⅱ)A为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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4卷引用:黑龙江省哈尔滨师范大学附属中学2021-2022学年高三上学期第一次月考数学(理)试题
黑龙江省哈尔滨师范大学附属中学2021-2022学年高三上学期第一次月考数学(理)试题黑龙江省大庆中学2021-2022学年高三上学期期中考试数学(理)试题甘肃省名校2021-2022学年高三上学期第一次月考 数学(理)试题(已下线)期中测试卷(本册综合卷)-2021-2022学年高二数学链接教材精准变式练(人教A版2019选择性必修第一册)
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解题方法
10 . 已知椭圆
过点
,且半焦距
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/dbba734e-c389-4a2a-91e4-187c3f1d1139.png?resizew=194)
(1)求椭圆C的标准方程;
(2)如图,已知
,过点
的直线l与椭圆相交于
两点,直线
与x轴分别相交于
两点,试问
是否为定值?如果是,求出这个定值;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3089b2e802564929156e131e7c492681.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/dbba734e-c389-4a2a-91e4-187c3f1d1139.png?resizew=194)
(1)求椭圆C的标准方程;
(2)如图,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a4cd75394423197fb6942d6debcf7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064008012971e87936e31b808b16e0ac.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7490886e2807c7b8a4fa57d99c4dc3a.png)
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6卷引用:黑龙江省哈尔滨市德强学校2021-2022学年高二上学期期中考试数学试题
黑龙江省哈尔滨市德强学校2021-2022学年高二上学期期中考试数学试题西藏拉萨中学2020-2021学年高二下学期第五次月考数学(文)试题西藏拉萨中学2020-2021学年高二下学期第五次月考数学(理)试题天津市第一中学2021-2022学年高二上学期期中数学试题吉林省白山市抚松县第一中学2021-2022学年高二上学期第三次月考数学试题(已下线)专题44 盘点圆锥曲线中的定值问题——备战2022年高考数学二轮复习常考点专题突破