名校
解题方法
1 . 已知椭圆E:
的左右顶点分别为
、
,点M在E上(异于左右顶点)、且
面积的最大值为2.过点M和点
的直线l与E交于另外一点B,且B关于x轴的对称点为C.
(1)求椭圆E的标准方程;
(2)试判断直线MC是否过定点?若过定点,求出定点坐标;若不过定点,请说明理由;
(3)线段MC的长度
能否为下列值:
、
?(直接写出结论即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a88c7af934e8ed88dee1c7037520ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b4cfeea2ed5946fbec2af5471103f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343a7ab6571ec674d8ec3dd5492fccaa.png)
(1)求椭圆E的标准方程;
(2)试判断直线MC是否过定点?若过定点,求出定点坐标;若不过定点,请说明理由;
(3)线段MC的长度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc28b3e3b151b74ace297c6af574cac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5991e9ec7666f533a528a4173c58f0ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920412ba07915840a5475e3c7d29894e.png)
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名校
解题方法
2 . 已知椭圆
的右顶点
,离心率
.
(1)求曲线C的方程;
(2)设斜率为k的直线l交x轴于T,交曲线C于A,B两点,是否存在k使得
为定值,若存在,求出k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/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
(1)求曲线C的方程;
(2)设斜率为k的直线l交x轴于T,交曲线C于A,B两点,是否存在k使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb40002482f261277377d582ca6a6c01.png)
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2023-05-19更新
|
394次组卷
|
2卷引用:北京市第二中学2022-2023学年高二下学期期中考试数学试题
名校
解题方法
3 . 已知椭圆
的离心率为
,上顶点的坐标为
,
(1)求椭圆C的方程.
(2)若椭圆C下顶点是B,M是C上一点(不与A,B重合),直线AM与直线
交于点P,直线BP交椭圆C于点N.求证:直线MN过定点.
![](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/383f12cb70ca55eba4ff012771dbfa9d.png)
(1)求椭圆C的方程.
(2)若椭圆C下顶点是B,M是C上一点(不与A,B重合),直线AM与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
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解题方法
4 . 已知椭圆E:
过点
,长轴长为4.
(1)求椭圆E的方程;
(2)设O为原点,点A为椭圆E的左顶点,过点
的直线
与椭圆E交于M、N两点,且直线l与x轴不重合,直线AM、AN分别与y轴交于P、Q两点.判断
是否为定值,如果是,请求出这个定值,如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cba284d675a3028d7a8d54f1f8ae70.png)
(1)求椭圆E的方程;
(2)设O为原点,点A为椭圆E的左顶点,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0b4afd16b79370532de44989d6c43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bab77b1212086d7b16e288f73a09560.png)
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5 . 已知椭圆
的离心率为
且过点
.
(1)求椭圆C的方程;
(2)设直线
与椭圆C交于不同的两点P,Q(均异于点A),求证:直线AP,AQ的斜率之和为定值;
(3)已知点M,N在C上,且
,求证:直线MN过定点.
![](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/39ea1f5bdd213c7c3a571b4c38850bf1.png)
(1)求椭圆C的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4365c55b9378c1536b94b763398ec4c2.png)
(3)已知点M,N在C上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59747cee312ee5140643428cae79efa.png)
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6 . 已知椭圆
的焦距和半长轴长都为2.过椭圆C的右焦点F作斜率为
的直线l与椭圆C相交于P,Q两点.
(1)求椭圆C的方程;
(2)设点A是椭圆C的左顶点,直线AP,AQ分别与直线
相交于点M,N.求证:以MN为直径的圆恒过点F.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.png)
(1)求椭圆C的方程;
(2)设点A是椭圆C的左顶点,直线AP,AQ分别与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
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2023-03-14更新
|
1007次组卷
|
8卷引用:北京市延庆区第一中学2023-2024学年高二下学期3月月考数学试卷
名校
解题方法
7 . 定义椭圆C:
上的点
的“圆化点”为
.已知椭圆C的离心率为
,“圆化点”D在圆
上.
(1)求椭圆C的方程;
(2)设椭圆C的左顶点为A,不过点A的直线l交椭圆C于M,N两点,点M,N的“圆化点”分别为点P,Q.记直线l,AP,AQ的斜率分别为k,
,
,若
,则直线l是否过定点?若直线l过定点,求定点的坐标;若直线l不过定点,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe115831e7a4a0cccfa3b4bd2e9943f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d0066d806e2fadbe68c1405afb0e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
(1)求椭圆C的方程;
(2)设椭圆C的左顶点为A,不过点A的直线l交椭圆C于M,N两点,点M,N的“圆化点”分别为点P,Q.记直线l,AP,AQ的斜率分别为k,
![](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/ed06be37684e5999b3378a09c7706b48.png)
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2023-03-02更新
|
782次组卷
|
4卷引用:北京市丰台区2023-2024学年高二上学期期末模拟数学试题
8 . 在平面直角坐标系
中,
为坐标原点,
,已知平行四边形
两条对角线的长度之和等于4.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/19/422d4598-2919-4fc4-84e4-2efcef577945.png?resizew=139)
(1)求动点
的轨迹方程;
(2)过
作互相垂直的两条直线
、
,
与动点
的轨迹交于
、
,
与动点
的轨迹交于点
、
,
、
的中点分别为
、
;证明:直线
恒过定点,并求出定点坐标;
(3)在(2)的条件下,求四边形
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317ebedfc0f5a96937fad87914a6f74b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ee04f40f79d73e803b91530e208330.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/19/422d4598-2919-4fc4-84e4-2efcef577945.png?resizew=139)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317ebedfc0f5a96937fad87914a6f74b.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/3f6f17bc385bafb37e8f964e5eb99cd0.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)在(2)的条件下,求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
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2023-02-17更新
|
413次组卷
|
3卷引用:北京市第八十中学2023-2024学年高二上学期期中考试数学试题
名校
解题方法
9 . 已知椭圆E:
过
,
两点.
(1)求椭圆E的方程;
(2)已知
,过
的直线l与E交于M,N两点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda54f62b47c78ba9aeffb1cc5905319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e0ea9cc3c956a0ece85df435492668b.png)
(1)求椭圆E的方程;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e0b4cce429003557b051ea0fa2f7de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354a4bedfa9edaadcbf18ebc45858f3f.png)
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2023-02-10更新
|
806次组卷
|
7卷引用:北京市第五十七中学2022-2023学年高二下学期3月月考数学试题
名校
解题方法
10 . 已知椭圆
的离心率为
,且过点
.
(1)求椭圆
的方程;
(2)斜率为
的直线
与椭圆交于不同两点
(都不同于点
),且直线
,
的斜率之积等于1.试问直线
是否过定点?若是,求出该点的坐标;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)斜率为
![](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/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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