解题方法
1 . 已知椭圆
的左右焦点分别为
是直线
上不同于原点
的一个动点,斜率为
的直线
与椭圆
交于
两点,斜率为
的直线
与椭圆
交于
两点.
(1)求
的值;
(2)是否存在点
,满足
?若存在,求出点
的坐标;若不存在,说明理由.(
分别为直线
的斜率)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68bc8aef11e1b71e72f5ae1e85152a66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ed463bf16c78a4bbb9d3acff922afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b63649f202d3f497de9dd21a4ac4049.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.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/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1efe96e7776f1b5dfa92c295f8d97d.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6dba93e718deb57f1e6e8122a2bcbb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc22602227e37a4305d48e619523e19b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bca32ffa13c674d0cd1f8db232f216b.png)
您最近一年使用:0次
名校
解题方法
2 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0fe9059acc47d2447576e1260c4622.png)
的上顶点为B,右焦点为F,点B、F都在直线
上.
(1)求椭圆
的标准方程及离心率;
(2)设直线
与椭圆
相切于第一象限内的点
,不过原点
且平行于
的直线
与椭圆
交于不同的两点
,
,点
关于原点
的对称点为
.记直线
的斜率为
,直线
的斜率为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0fe9059acc47d2447576e1260c4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a47eed3e8f5c0f0e130dffdb1bcdefe.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8e1ebc1b3f6e793dd06aac312dc9bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/2a30f3a8b673cc28bd90c50cf1a35281.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/5963abe8f421bd99a2aaa94831a951e9.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/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67351fe10fcfc3f9072eec4c60bfaaa5.png)
您最近一年使用:0次
2024-04-10更新
|
210次组卷
|
2卷引用:四川省宜宾市叙州区第二中学校2023-2024学年高二下学期第一学月考试数学试题
3 . 已知椭圆
的下、上顶点分别为
,左、右顶点分别为
,四边形
的面积为
,若椭圆
上的点到右焦点距离的最大值和最小值之和为6.
(1)求椭圆
的方程;
(2)过点
且斜率不为0的直线
与
交于
(异于
两点,设直线
与直线
交于点
,探究三角形
的面积是否为定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d468be20b4d43f5de75416de20e8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e5d91f4f631c580c155eba8c92bda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c423cfa71956862edbed10a5ba12d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b3c94d505e7c5bcce94afec4af3d92.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968c76e7db96da6b687d10aa430a02b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e935bb9d7b7115429edbd1e7469af65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1eb906bb26daa7bdee29c86d33a02e0.png)
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解题方法
4 . 已知椭圆
的上下顶点分别为
,左右顶点分别为
,四边形
的面积为
,若椭圆
上的点到右焦点距离的最大值和最小值之和为6.
(1)求椭圆
的方程;
(2)过点
且斜率不为0的直线
与
交于
(异于
)两点,设直线
与直线
交于点
,证明:点
在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d468be20b4d43f5de75416de20e8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e5d91f4f631c580c155eba8c92bda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c423cfa71956862edbed10a5ba12d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e935bb9d7b7115429edbd1e7469af65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2024-03-21更新
|
526次组卷
|
2卷引用:四川省宜宾市2024届高三下学期第二次诊断性考试文科数学试卷
5 . 已知椭圆
的离心率为
,且左顶点A与上顶点B的距离
.
(1)求椭圆
的标准方程;
(2)不经过坐标原点
的直线
交椭圆
于P,Q两点
两点不与椭圆上、下顶点重合),当
的面积最大时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f23420529a6a808d22d454e87a6194.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)不经过坐标原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/030d5205aabb757fb29e03704b4b26b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee89f7d493efc00cd703af6bc73f9ea9.png)
您最近一年使用:0次
2024-01-06更新
|
1706次组卷
|
5卷引用:四川省宜宾市珙县中学校2023-2024学年高二下学期第一次月考数学试题
6 . 过原点O的直线交椭圆E:
(
)于A,B两点,
,
面积的最大值为
.
(1)求椭圆E的方程;
(2)连AR交椭圆于另一个交点C,又
(
),分别记PA,PR,PC的斜率为
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e5886500df9d54c1bfdeefb174246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35366652793f9994cc34b40d9d9af59a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ac4c9567e701a0424e02f97700c31f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
(1)求椭圆E的方程;
(2)连AR交椭圆于另一个交点C,又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30ac6c9aeea53b5a87018aa4b3652c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b951511f1b99e3dcd0be36ef99e2b7.png)
您最近一年使用:0次
2023-09-02更新
|
750次组卷
|
4卷引用:四川省宜宾市南溪第一中学校2024届高三上学期一诊考试理科数学模拟试题
四川省宜宾市南溪第一中学校2024届高三上学期一诊考试理科数学模拟试题(已下线)重难点突破09 一类与斜率和、差、商、积问题的探究(四大题型)广东省四校2024届高三上学期第一次联考数学试题(已下线)考点16 解析几何中的定值问题 2024届高考数学考点总动员
7 . 如图,椭圆
的左顶点
,点
都在椭圆上不与顶点重合且关于坐标原点
对称,其中点
在第一象限,线段
的中点是
,点
在
轴上的投影是
,直线
交椭圆C于另一交点
.直线
的斜率分别是
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/8/d3d1e34d-1b34-4e04-b1bb-389423c75a7e.png?resizew=189)
(1)求证:
是定值并求出该定值;
(2)求证:
;
(3)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9bf37fb661ccc2fdd67407269708df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](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/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/8/d3d1e34d-1b34-4e04-b1bb-389423c75a7e.png?resizew=189)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe870e7477244aab08cc0fd8de24971.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17277a306d4d0a0a0cf293f87802cf66.png)
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2023-02-07更新
|
799次组卷
|
3卷引用:四川省宜宾市叙州区第一中学校2023-2024学年高二上学期期末数学试题
名校
解题方法
8 . 已知焦点在x轴上,中心在原点,离心率为
的椭圆经过点
,动点A,B(不与点M重合)均在椭圆上,且直线
与
的斜率之和为1.
(1)求椭圆的方程;
(2)证明直线
经过定点,并求这个定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bea681006f614f8a070e9c6a942c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
(1)求椭圆的方程;
(2)证明直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2022-05-27更新
|
1594次组卷
|
7卷引用:四川省宜宾市叙州区第一中学校2024届高三上学期期末数学(理)试题
四川省宜宾市叙州区第一中学校2024届高三上学期期末数学(理)试题四川省宜宾市叙州区第一中学校2024届高三上学期期末数学(文)试题天津市南开区2022届高三下学期三模数学试题(已下线)2.8直线与圆锥曲线的位置关系(1)(已下线)9.5 三定问题及最值(精讲)(已下线)专题9-2 圆锥曲线(解答题)-1安徽省安庆市怀宁县新安中学2023-2024学年高二上学期11月月考数学试卷
名校
解题方法
9 . 如图,已知椭圆E:
(
)的右焦点为
,离心率
,过F作一直线
交椭圆E于A,B两点(其中A在x轴的上方),过点A作直线
:
的垂线,垂足为C.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/6ad90141-1639-42f6-87d3-f7250d7228f9.png?resizew=175)
(1)求椭圆E的方程;
(2)问:在x轴上是否存在一个定点T,使得B,T,C三点共线?若存在,求出T的坐标;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/e3f363d815fde5c34c317df8c6a1d616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.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/f23d29646155e27b172ecdf263e2d702.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/6ad90141-1639-42f6-87d3-f7250d7228f9.png?resizew=175)
(1)求椭圆E的方程;
(2)问:在x轴上是否存在一个定点T,使得B,T,C三点共线?若存在,求出T的坐标;若不存在,请说明理由.
您最近一年使用:0次
2020-07-24更新
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294次组卷
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3卷引用:四川省宜宾市叙州区第一中学校2024届高三下学期开学考试数学(文)试题
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解题方法
10 . 已知椭圆
的左、右两焦点分别为
,椭圆上有一点
与两焦点的连线构成的
中,满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b05e1ac52d7dd4a66c4688d3a1e4c7.png)
(1)求椭圆
的方程;
(2)设点
是椭圆上不同于椭圆顶点的三点,点
与点
关于原点
对称,设直线
的斜率分别为
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c18dd65f811697a1e66ce082866c8fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5439f5ff9bd5deec0f0ef35c6f605b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cfd997d3b66a3b8f7731b26f0ab0c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b05e1ac52d7dd4a66c4688d3a1e4c7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28855a0db693584aabac1df99dfade3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d975e77966b21816456f149359af7161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c65902e35640cf2c8d4111c36b40145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c0d7ea4f1696ad189baf8ea3d294e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c60a35d29cc98affee861b95f51329a2.png)
您最近一年使用:0次
2017-04-28更新
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783次组卷
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2卷引用:四川省宜宾市第四中学校2023-2024学年高二上学期期末数学试题