解题方法
1 . 已知如图,圆
、椭圆
均经过点
,圆
的圆心为
,椭圆
的两焦点分别为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/28/b5a8fb58-0434-450e-8e92-1909fc41c4c9.png?resizew=270)
(1)分别求圆
和椭圆
的标准方程;
(2)过
作直线
与圆
交于
、
两点,试探究
是否为定值?若是定值,求出该定值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cac72ae550626c8583e4466b8b33d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d738555c0a4b2c15ae61d4e85fdbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2377ea22862dee84fcd0038858de4dfb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/28/b5a8fb58-0434-450e-8e92-1909fc41c4c9.png?resizew=270)
(1)分别求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.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/473f60cbdbe740902f93c4a007df2ac3.png)
您最近一年使用:0次
2017-07-19更新
|
282次组卷
|
2卷引用:广东省揭阳市2016-2017学年高二下学期学业水平考试(期末)数学(理)试题
2 . 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:广东省普宁市华美实验学校2020-2021学年高二下学期第一次月考数学试题
名校
3 . 如图,在平面直角坐标系中,已知A、B、C是椭圆
上不同的三点,
,C在第三象限,线段BC的中点在直线OA上.
(1)求椭圆的标准方程;
(2)求点C的坐标;
(3)设动点P在椭圆上(异于点A、B、C)且直线PB, PC分别交直线OA于M、N两点,证明
为定值并求出该定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c380df5fc37bbf25ff2b5ad890675c.png)
(1)求椭圆的标准方程;
(2)求点C的坐标;
(3)设动点P在椭圆上(异于点A、B、C)且直线PB, PC分别交直线OA于M、N两点,证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c58625fd2a35ef8883b60af16bf8926.png)
![](https://img.xkw.com/dksih/QBM/2017/6/1/1699556795555840/1700197770387456/STEM/79e19bdac4924b9da629aa7a86b0742d.png?resizew=233)
您最近一年使用:0次
2017-06-02更新
|
836次组卷
|
2卷引用:广东省阳春市第一中学2018届高三上学期第二次月考数学(文)试题.
名校
解题方法
4 . 已知椭圆
的一个焦点为
,其左顶点A在圆
上.
(1)求椭圆C的方程;
(2)直线
交椭圆C于M,N两点,设点N关于
轴的对称点为
(点
与点
不重合),且直线
与
轴的交于点
,试问
的面积是否存在最大值?若存在,求出这个最大值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7b07ace87ed58fdc1f1bc78a04aeda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4133318272b4088b0b1b043d58b771.png)
(1)求椭圆C的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae032235685acc616c13092c545686f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7688363f5ffff23a6193c7a8eee501c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7688363f5ffff23a6193c7a8eee501c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e040f32e983e5b7920fcb1b9b1eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
您最近一年使用:0次
2017-05-22更新
|
678次组卷
|
4卷引用:广东省惠州市2017届高三4月模拟考试数学理试题
名校
解题方法
5 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
与抛物线
共焦点
,抛物线上的点M到y轴的距离等于
,且椭圆与抛物线的交点Q满足
.
(1)求抛物线的方程和椭圆的方程;
(2)过抛物线上的点
作抛物线的切线
交椭圆于
、
两点,设线段AB的中点为
,求
的取值范围.
![](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/837ddcbaa6d5fe541fec04e9d6aee7c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b47b1e502b582f5cb3989d4d1d32b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f916d555a9d9e0133ae4916edf454e9.png)
(1)求抛物线的方程和椭圆的方程;
(2)过抛物线上的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.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/132668fc41c8266ba917dc5b4995c6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
您最近一年使用:0次
2017-05-12更新
|
1047次组卷
|
3卷引用:广东省揭阳市2017届高三第二次(4月)模拟考试数学理试题
名校
6 . 已知椭圆
:
(
)的短轴的一个顶点和两个焦点构成直角三角形,且三角形的面积为1.
(Ⅰ)求椭圆
的方程;
(Ⅱ)设
,
是椭圆
的左、右焦点,过
,
任作两条平行直线分别交椭圆于
,
和
,
不同四点,求四边形
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)设
![](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/c5db41a1f31d6baee7c69990811edb9f.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/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://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
7 . 已知
是椭圆
的右焦点
是
上一点
当
周长最小时,其面积为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f67e3b8cf7bcd46124751e6b19a077b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcadb4605802c38eb7b545a804b3e243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff6921a0ab8aa666a93542669870adeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca3d8c2c685f6060b396460a58cef40.png)
您最近一年使用:0次
2017-05-03更新
|
1022次组卷
|
8卷引用:【全国百强校】广东仲元中学2017-2018学年高二下学期期中考试数学(理)试题
【全国百强校】广东仲元中学2017-2018学年高二下学期期中考试数学(理)试题安徽省太和中学2016-2017学年高二下学期期中考试数学(理)试题(已下线)上海华东师范大学第二附属中学2019届高三数学考试试卷(10月)湖南省长沙市2018届高三第一次模拟数学(理科)试题(已下线)2019年4月23日 《每日一题》理科 三轮复习——椭圆及其性质(已下线)2019年4月23日 《每日一题》文科 三轮复习——椭圆及其性质重庆市万州沙河中学2020-2021学年高二上学期10月月考数学试题(已下线)第13讲 椭圆-2
8 . 设椭圆
的左、右焦点分别为
,其焦距为
,点
在椭圆的内部,点
是椭圆
上的动点,且
恒成立,则椭圆离心率的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dcc91c2ffb5571eaf944c34f5e8ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bcb12057ab2e81d1fe12ef5725698ed.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/24022bd0c93bad69e5abdf5a4acee233.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-04-29更新
|
1576次组卷
|
5卷引用:广东深圳市2017届高三第二次(4月)调研考试数学理试题
9 . 已知椭圆
的左右焦点分别为
,离心率为
,点
在椭圆
上,
,
,过
与坐标轴不垂直的直线
与椭圆
交于
两点.
(1)求椭圆
的方程;
(2)若
的中点为
,在线段
上是否存在点
,使得
?若存在,请求出
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a500e2383868ec2f9ae8f310a388077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882651b776851f3f0665de12da6ed47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.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/3a9db6607697685bfe7d99b7e21f4b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356fe0290b3e1d6681e8187be95e39f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.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/1ffb7c53a398c07ac9f4eb313380be18.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffb7c53a398c07ac9f4eb313380be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59862888c794cad26b35d4dc88eab741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c728334a9352ba1c820509532dc37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a83f3beb2326febaa2035031a2d04e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-04-28更新
|
1754次组卷
|
7卷引用:【市级联考】广东省汕头市2019年普通高考第一次模拟考试数学理试题
【市级联考】广东省汕头市2019年普通高考第一次模拟考试数学理试题2017届陕西省咸阳市高三模拟考试(三)数学(理)试卷【全国百强校】山西省太原市第五中学2019届高三10月月考数学(文)试题江西省临川第一中学2018-2019学年高二下学期期中数学(文)试题陕西省渭南市大荔县2018-2019学年高二下学期转段考试数学(文)试题陕西省渭南市大荔县2018-2019学年高二下学期转段考试数学(理)试题(已下线)专题08 解析几何中的最值范围问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖
名校
解题方法
10 . 已知动圆
过定点
且与圆
相切,记动圆圆心
的轨迹为曲线
.
(Ⅰ)求曲线
的方程;
(Ⅱ)过点
且斜率不为零的直线交曲线
于
,
两点,在
轴上是否存在定点
,使得直线
的斜率之积为非零常数?若存在,求出定点的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a1862d0365f1a597f3445bc955a986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecabf0a170ee6f1e8d63ebab3eb887a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅰ)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40540618c5b9bb0de570d4c742efe648.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec56d586906ebaaa3c32c85a415f4c69.png)
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2017-04-19更新
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3卷引用:2017届广东省韶关市高三4月高考模拟测试数学理试卷