名校
1 . 椭圆
的焦点
是一个等轴双曲线
的顶点,其顶点是双曲线
的焦点,椭圆
与双曲线
有一个交点P,
的周长为
.
(1)求椭圆
与双曲线
的标准方程;
(2)点M是双曲线
上的任意不同于其顶点的动点,设直线
,的斜率分别为
,求
的值;
(3)过点
任作一动直线l交椭圆
于A、B两点,记
.若在线段AB上取一点R,使得
,试判断当直线l运动时,点R是否在某一定曲线上运动?若是,求出该定曲线的方程;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a3ee8c4ef031e31d6d071eaf64c672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1734bef717187708351c1be3bd035071.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
(2)点M是双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaafb050b24c4e806c480e0665aaa5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e198b5676c570a59e59f1dce55105f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42623f14667ebfa914eb12d026023d6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8396fe49ede192a26ef3c91ea12252f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce30fc0664cca88dbe6d38f32aee81e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe3d3d2dae014da00e10f1b4b7f17d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/379afdf213f4c6ec9a745b0c0cf37c44.png)
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名校
解题方法
2 . 已知
,
为
的两个顶点,
为
的重心,边
,
上的两条中线长度之和为6.
(1)求点
的轨迹
的方程;
(2)若直线
与曲线
相交于点
、
,若线段
的中点是
,求直线
的方程;
(3)已知点
,
,
,直线
与曲线
的另一个公共点为
,直线
与
交于点
,求证:当点
变化时,点
恒在一条定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f05b013e4b7166cbc87c5a83d6a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0b4afd16b79370532de44989d6c43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac7c28099bfbb7dc2a45ad166eace05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80e226b2b5fa8e31e6a12482a7e63e92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dad483f961dc9d4c1516cf9f60138c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2023-03-18更新
|
771次组卷
|
3卷引用:上海市七宝中学2023届高三下学期开学考试数学试题
22-23高二下·上海浦东新·阶段练习
名校
解题方法
3 . 已知椭圆E:
的两个焦点与短轴的一个端点是直角三角形的三个顶点,直线l:
与椭圆E相切于点T.
(1)求椭圆E的离心率;
(2)求椭圆E的标准方程及点T的坐标;
(3)设O为坐标原点,直线l'平行于直线OT,与椭圆E交于不同的两点A、B,且与直线l交于点P,那么是否存在常数λ,使得
?如果存在,求出λ的值;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae652daf6059ff386f99bef2210518c5.png)
(1)求椭圆E的离心率;
(2)求椭圆E的标准方程及点T的坐标;
(3)设O为坐标原点,直线l'平行于直线OT,与椭圆E交于不同的两点A、B,且与直线l交于点P,那么是否存在常数λ,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fd2ae373576718372b8741e17ae794.png)
您最近一年使用:0次
2023-03-18更新
|
1068次组卷
|
4卷引用:上海市华东师范大学第二附属中学2022-2023学年高二下学期3月月考数学试题
(已下线)上海市华东师范大学第二附属中学2022-2023学年高二下学期3月月考数学试题上海市徐汇中学2022-2023学年高二下学期期中数学试题天津市滨海新区塘沽第一中学2023届高三下学期十二校联考(二)数学模拟试题天津市西青区杨柳青第一中学2023-2024学年高二上学期第二次阶段性测试数学试题
解题方法
4 . 已知椭圆
的离心率为
,以其四个顶点为顶点的四边形的面积等于
.动直线
、
都过点
,斜率分别为k、
,
与椭圆C交于点A、P,
与椭圆C交于点B、Q,点P、Q分别在第一、四象限且
轴.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/d6153d5b-bbbd-4c2c-bb79-ee1a828d42fc.png?resizew=231)
(1)求椭圆C的标准方程;
(2)若直线
与x轴交于点N,求证:
;
(3)求直线AB的斜率的最小值,并求直线AB的斜率取最小值时的直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453ea8f3a2b85526b54bf453871c3820.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/e15ccc8e48ea850d2995669ce7fe2116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcb657968fd44e420c3299bc015662f.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/d2784a52c4da98dc9df661fc152fc29e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/d6153d5b-bbbd-4c2c-bb79-ee1a828d42fc.png?resizew=231)
(1)求椭圆C的标准方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6be8d82567ad7ce300d994f5bf7a4256.png)
(3)求直线AB的斜率的最小值,并求直线AB的斜率取最小值时的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
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5 . 已知椭圆
的左、右焦点分别为
和
,经过点
且斜率为k的直线l交椭圆
于B,C两点,其中点C在第二象限.如图所示,将
的上半部分(半椭圆)沿着长轴翻折使得点C翻折至点A且二面角
为直二面角.设三角形
和三角形
的周长分别为
和
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/ba44a91d-f312-406b-b629-1d8e0330619f.png?resizew=335)
(1)证明:
;
(2)若
,求异面直线
和
所成角的大小;
(3)若
,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f639240bf9ab7a9a68e779cd51ab2641.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5465c4f86cbc6cc2c9ba7adbc2060b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/045a830b449a9b95a51688c63d80ba15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef419f0740dae5db5cc51675bc51afb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1256c57833e0d2d6b58e7fa20576eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94cde8f1ae6799f3fe64ed059b485fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/ba44a91d-f312-406b-b629-1d8e0330619f.png?resizew=335)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800ce9c8dfb28051661e98015f4041c2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f247c2d094e3a2b5df9178d5f55fbf39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbad65b3d744b70da2480eee1cdb587.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33a065ed0c5b57b6be8f3be52249c33f.png)
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解题方法
6 . 已知椭圆
:
(
)的离心率为
,它的上顶点为
,左、右焦点分别为
,
(常数
),直线
,
分别交椭圆
于点
,
.
为坐标原点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/4bf70cfc-5f0c-4e72-bdd9-360e1e913a72.png?resizew=243)
(1)求证:直线
平分线段
;
(2)如图,设椭圆
外一点
在直线
上,点
的横坐标为常数
(
),过
的动直线
与椭圆
交于两个不同点
、
,在线段
上取点
,满足
,试证明点
在直线
上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](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/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5076829e649b3f3866d4a7e07a5713e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697c20fca284394bf5d5b9e5f6d952e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/4bf70cfc-5f0c-4e72-bdd9-360e1e913a72.png?resizew=243)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)如图,设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23116746fed8b245a5d69ab5600836e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ef3f1bbaa28cba883f73ad7f4f2d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a77265c768c72d5d3ac907fb722a5c.png)
您最近一年使用:0次
名校
7 . 已知椭圆方程为
,左右焦点分别为
,
,
是长轴的右端点.点C在椭圆上,C关于原点的对称点为B.过C作直线
垂直于x轴,与x轴相交于M.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/8d44a63e-c917-4688-ae21-afab539d9841.png?resizew=235)
(1)当C为椭圆的上顶点时,求三角形
的周长(直接写出结果);
(2)若C在第一象限,且直线BM与直线AC的斜率乘积为
,求
;
(3)在(2)的条件下,设PQ是椭圆上位于第四象限的两点(Q在P的右边),直线
与线段PQ相交于N,且满足
.判断四边形AQPB的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af0127bac2803d37870edbcdac6214c.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/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/8d44a63e-c917-4688-ae21-afab539d9841.png?resizew=235)
(1)当C为椭圆的上顶点时,求三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c3015610a5676a79e836b82ba7b62e.png)
(2)若C在第一象限,且直线BM与直线AC的斜率乘积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0b732912cec85d7818ba891cdf82ed.png)
(3)在(2)的条件下,设PQ是椭圆上位于第四象限的两点(Q在P的右边),直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0520c816f0fd88659228f80a2b4ad7.png)
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8 . 已知椭圆C:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
,
,
,
,
这四点中恰有三点在椭圆C上.
(2)点E是椭圆C上的一个动点,求
面积的最大值;
(3)过
的直线l交椭圆C于A、B两点,设直线l的斜率
,在x轴上是否存在一点
,使得以DA、DB为邻边的平行四边形为菱形?若存在,求实数m的取值范围;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/434249d6640b0c1a712d215cf8b83d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21b59d92c33a3b451d6cc13878c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29949b6603f30e3cda2a1af6de90f3f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318f2f6154dc3463b88fe889a5403c9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c41b2f7ca11db3aaea46c69286adbce.png)
(2)点E是椭圆C上的一个动点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48e42ce4fd7e6da946bf2b7b22200db.png)
(3)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72babd92b33b44fa45d0d559c03f617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349109e1d324c60a977c98bc30ec9973.png)
您最近一年使用:0次
2022-12-16更新
|
567次组卷
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2卷引用:上海市宝山区2023届高三上学期一模数学试题
9 . 已知曲线
的方程为
,直线
:
与曲线
在第一象限交于点
.
(1)若曲线
是焦点在
轴上且离心率为
的椭圆,求
的值;
(2)若
,
时,直线
与曲线
相交于两点M,N,且
,求曲线
的方程;
(3)是否存在不全相等
,
,
满足
,且使得
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/bb35212fddffca72021a984cfb1eccea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ff186a9842c2e005014f9a82b6bec57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46de5f5993e7dcd0e828081045e502af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb35212fddffca72021a984cfb1eccea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3822d5b5db72c2560aa385bf6500fc47.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b5dc876d7dcd3c971b36d26668b1e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffff36f925d527a0000d36420ca864e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192a35f0603f57bcc6ec1e75927ba916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(3)是否存在不全相等
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b5dc876d7dcd3c971b36d26668b1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7345f310975ddb40dca94b5135c35dad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061baa765d2939a416300de14c45b8ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944f333c07f1ace36046b6069ce79b16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c68c35a19691406a91a5dec7e92e670a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
您最近一年使用:0次
2022-12-16更新
|
572次组卷
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3卷引用:上海市徐汇区2023届高三一模数学试题
名校
解题方法
10 . 在xoy坐标平面内,已知椭圆
的左、右焦点分别为
、
,直线
与
相交于A、B两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/5c575c67-f6cd-498c-a8b6-80a32626836a.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/1b3bfeac-39dd-441b-9ade-9f03b2f51281.png?resizew=187)
(1)记d为A到直线
的距离,当
变化时,求证:
为定值;
(2)当
时,求
的值;
(3)过B作BM⊥x轴,垂足为M,OM的中点为N,延长AN交
于另一点P,记直线PB的斜率为
,当
取何值时,
有最小值?并求出此最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dfefe29b9f7643bf7099ee21345afc.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/2cdaf3914f625c7535a8ddc019ff4cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/5c575c67-f6cd-498c-a8b6-80a32626836a.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/1b3bfeac-39dd-441b-9ade-9f03b2f51281.png?resizew=187)
(1)记d为A到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1531b008d36fbc27fb940a8efe239c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f79c04df9051331559b1bbf20aa007.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30892784d3f0a6ef780c9fa42796df2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c600e7bc9ca4f34bd849c27efdf33b7.png)
(3)过B作BM⊥x轴,垂足为M,OM的中点为N,延长AN交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3fbcd952073f38340769b8fbca5b23.png)
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2022-12-15更新
|
789次组卷
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2卷引用:上海市普陀区2023届高考一模数学试题