名校
解题方法
1 . 已知椭圆M:
的离心率为
,左顶点A到左焦点F的距离为1,椭圆M上一点B位于第一象限,点B与点C关于原点对称,直线CF与椭圆M的另一交点为D.
(2)设直线AD的斜率为
,直线AB的斜率为
.求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
(2)设直线AD的斜率为
![](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/67351fe10fcfc3f9072eec4c60bfaaa5.png)
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2021-12-03更新
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6卷引用:福建省连城县第一中学2021-2022学年高二上学期第二次月考数学试题
2 . 已知
为椭圆
的左焦点,直线
与椭圆
交于
,
点,
轴,垂足为
,
与椭圆
的另一个交点为
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/1d7be8ce-3f26-4f61-a3d7-cdd623c45fd5.png?resizew=212)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69daca955a565fa537347dd0d93783f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca8b6ac96dfe0046b7ca1745176ca22.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/8178c63d125ee6235feeb2fc70d02745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/1d7be8ce-3f26-4f61-a3d7-cdd623c45fd5.png?resizew=212)
A.![]() |
B.![]() ![]() |
C.直线![]() ![]() |
D.直线![]() ![]() |
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3卷引用:福建省厦门双十中学2021-2022学年高二上学期期中考试数学试题
3 . 已知
为坐标原点,椭圆
:
的左、右焦点分别为
,
,
,
为椭圆的上顶点,以
为圆心且过
,
的圆与直线
相切.
(1)求椭圆
的方程;
(2)已知直线
与椭圆
交于
,
两点,若
,点
在
上,
.证明:存在点
,使得
为定值.
![](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/48da128547c4cf9745e8e4b99988a3db.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/a2644e9f73e5871db934fdafc431d675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/f2d9da11b6082b4bc914e43a277afad3.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a049b98bd26f2ace2be1c7211fcf313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b33693ae164d2f57bd15664016f8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d1e4eb79798983f31476b7301a1667.png)
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名校
解题方法
4 . 平面内,动点
到
的距离与它到直线
的距离之比为
.
(1)求动点
的轨迹
的方程;
(2)过
的直线与
相交于
,
两点,
关于
轴的对称点为
,证明:直线
必过
轴上一定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e390bd4dcdb6c49a46b0cbc0fd38c110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解题方法
5 . 与椭圆
(
且
)相关的两条直线
称为椭圆C的准线,已知直线l是位于椭圆C右侧的一条准线,椭圆上的点到l的距离的最大值为6,最小值为2.
(1)求椭圆C的标准方程及直线l的方程;
(2)设椭圆C的左右两个顶点分别为
,T为直线l上的动点,且T不在x轴上,
与C的另一个交点为M,
与C的另一个交点为N,F为椭圆C的左焦点,求证:
的周长为8.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00f26e45e91c36ef8833cf46d0e3b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671241e869118e81afc8cc427d24fe22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9687dfe1247fd7ff48389de273b16038.png)
(1)求椭圆C的标准方程及直线l的方程;
(2)设椭圆C的左右两个顶点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e463e661d45282d927b7596d5ad3b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3896bb7e10246b3b8c33da4c500762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfb02e157819a2bdd0f2790cbc825e9.png)
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解题方法
6 . 已知椭圆
经过点
,且离心率为
.
(1)求椭圆C的方程;
(2)若椭圆C的上顶点为A,经过点(-1,-1),且斜率为k的直线与椭圆C交于不同两点P,Q(均异于点A),证明:直线AP与AQ的斜率之和为定值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7167b1f25e38b061b3a234bf4d569a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆C的方程;
(2)若椭圆C的上顶点为A,经过点(-1,-1),且斜率为k的直线与椭圆C交于不同两点P,Q(均异于点A),证明:直线AP与AQ的斜率之和为定值
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解题方法
7 . 平面内两个动圆的圆心分别为
,半径分别为
,其中
满足
,且
.
(1)求证:圆
与圆
相交,并求两圆的交点的轨迹E的方程;
(2)过点
的动直线l与曲线E相交于C,D两点.在平面直角坐标系
中,是否存在与点P不同的定点M,使得
恒成立?若存在,求出点M的坐标:若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe70991c84e671ac2c0fa537e297c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8543261a8e351eb95cdfebb001a3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8543261a8e351eb95cdfebb001a3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7960dd41fa13220e7e863193d2397cd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb068fbc4190601f0bdd3395b3c69d9.png)
(1)求证:圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe413b12ffabfb252121aa2eaa31017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e21b699b7039f78c1e2deafe06eb89c.png)
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解题方法
8 . 已知斜率为
的直线
与椭圆
:
交于
,
两点.
(1)若线段
的中点为
,求
的值;
(2)若
,求证:原点
到直线
的距离为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.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/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16d9a816a08b4ecc2504c0b7efb0cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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4卷引用:福建省福州市永泰县山海联盟校教学协作体2021-2022学年高二上学期期末考试数学试题
名校
解题方法
9 . 已知椭圆C:
+
=1(a>b>0)的离心率为
,A(a,0),B(0,b),O(0,0),
OAB的面积为
.
(1)求椭圆C的方程;
(2)过右焦点F作与x轴不重合的直线l交椭圆C于P,Q两点,连接AP,AQ,分别交直线x=3于M,N两点,若直线MF,NF的斜率分别为k1,k2,试问:k1k2是不是定值?若是,求出该值,若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7355be4fcbc3130a5951364a3be76d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5268413295580cfda0755ab458b36b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆C的方程;
(2)过右焦点F作与x轴不重合的直线l交椭圆C于P,Q两点,连接AP,AQ,分别交直线x=3于M,N两点,若直线MF,NF的斜率分别为k1,k2,试问:k1k2是不是定值?若是,求出该值,若不是,请说明理由.
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5卷引用:福建省漳州市2019-2020学年高二上学期期末数学试题
福建省漳州市2019-2020学年高二上学期期末数学试题人教A版(2019) 选择性必修第一册 过关斩将 第三章 圆锥曲线的方程 专题强化练6 椭圆的综合运用黑龙江省哈尔滨市第六中学2020-2021学年高二10月月考数学(文)试题(已下线)专题06 圆锥曲线的方程-椭圆的综合运用-2021-2022学年高二数学同步练习和分类专题教案(人教A版2019选择性必修第一册)(已下线)专题4 齐次化妙解圆锥曲线问题 微点2 齐次化妙解圆锥曲线问题综合训练
10 . 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)
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