名校
解题方法
1 . 设F,E分别是椭圆
的左,右焦点,椭圆上存在点N,满足
且
的面积为20.
(1)求b的值;
(2)设点P的坐标为
,直线过点P,与椭圆交于点A,B,线段
的中点记为M.若
是
与
的等比中项,求a的最小值,并求出此时直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d71528844499d541fb06d16147a1cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35a55ff4c434ce34d90382cea5afb85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fffabcb0a245d00182082c8cc99349.png)
(1)求b的值;
(2)设点P的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832f2474efe89961ef41e884da7660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb79ed88746f9163c7c6b0b674556de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4522fdddbca40f55f3130c4c44e0bb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e944586ad3d14e01f4d1ad9d8f4910.png)
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解题方法
2 . 已知椭圆
的上顶点为
,右顶点为
,其中
的面积为1(
为原点),椭圆
离心率为
.
(1)求椭圆
的方程;
(2)若不经过点
的直线
与椭圆
交于
,
两点,且
,求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fdc02f00cf00a6dfd88b53a90f1f7a4.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/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若不经过点
![](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/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/0b768ea6a05cbf45b28fc46c501ba532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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名校
解题方法
3 . 已知点
,点
分别为椭圆
的左、右顶点,直线
交曲线
于点
是等腰直角三角形,且
.
(1)求
的方程:
(2)设过点
的动直线
与
相交于
,
两点.当以
为直径的圆过坐标原点
时,求直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915b001438c9868298c66c7c2db35426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d3c677c7f7be02c5b75291b18b476a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设过点
![](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/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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2023-02-09更新
|
331次组卷
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3卷引用:湖南省怀化市2022-2023学年高二上学期期末数学试题
4 . 已知椭圆
的左右焦点分别为
,椭圆C经过点
,且直线
,与圆
相切.
(1)求椭圆C的方程;
(2)直线
与椭圆C交于P,Q两点,点M在x轴上,且满足
,求点M横坐标的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40630a669f4eedf626bc24851df10c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
(1)求椭圆C的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53cd24fdb222c2e68c05c21600383df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db64a7467f0abcfe06cc9b279a5be7c.png)
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2023-02-03更新
|
283次组卷
|
3卷引用:湖南省株洲市炎陵县2022-2023学年高二下学期开学考试数学试题
名校
解题方法
5 . 已知离心率为
的椭圆
的下顶点为
,过点B(0,3)作斜率存在的直线交椭圆C于P,Q两点,连AP,AQ分别与x轴交于点M,N,记点M,N的横坐标分别为xM,xN.
(1)求椭圆C的标准方程;
(2)试判断 xM
xN 是否为定值?若为定值,请求出该定值;若不是定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a23e87d16c32b5aa4357f481b5808a0.png)
(1)求椭圆C的标准方程;
(2)试判断 xM
![](https://img.xkw.com/dksih/QBM/2023/6/6/3254087182696448/3260295363428352/STEM/f24c02a70cc24d66909465c303305077.png?resizew=4)
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2023-06-15更新
|
612次组卷
|
4卷引用:湖南省常德市第一中学2022届高三考前二模数学试题
名校
解题方法
6 . 已知椭圆
:
的离心率为
,且点
在
上.
(1)求
的方程;
(2)设
,
为
的左、右焦点,过
的直线
交
于A,B两点,若
内切圆的半径为
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001beb13f8093694649e63951fe0853f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)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/a3fb78c5f885034612c0e030b920143d.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/d3c07ebcbfacda073208d483c58e8a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46da460caec5f8d14517f1da17f2a921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2023-01-19更新
|
362次组卷
|
3卷引用:湖南省娄底市涟源市第二中学2022-2023学年高二上学期期末数学试题
解题方法
7 . 已知椭圆
的左、右焦点分别为
,条件①离心率为
;②点
在
上运动,且
;③点
在
上.从①②③任选两个条件作为已知,解决下列问题:
(1)求椭圆
的方程;
(2)已知过点
的直线
与椭圆
交于
两点,点
,直线
的斜率分别记为
,试探讨
是否为定值?若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/f595683f69d5d6b5ca76408b0ff6ff17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知过点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e0b4cce429003557b051ea0fa2f7de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7aefcd9901c0feba0be3a937a98bbf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d835b718213cedef8370f784ef0f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81715fe5dca17cc3d3995c6973bebe2c.png)
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名校
8 . “蒙日圆”涉及几何学中的一个著名定理,该定理的内容为:椭圆上任意两条互相垂直的切线的交点,必在一个与椭圆同心的圆上.称此圆为该椭圆的“蒙日圆”,该圆由法国数学家加斯帕尔•蒙日
最先发现,已知长方形R的四条边均与椭圆
相切,则下列说法正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/16/44180cd5-e030-46c3-bda1-12ffa576e509.png?resizew=149)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d06006ef084dfeb67109a304771122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2242ca20bd7ab3d41b128e10a4071521.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/16/44180cd5-e030-46c3-bda1-12ffa576e509.png?resizew=149)
A.椭圆C的离心率为![]() | B.椭圆C的蒙日圆方程为![]() |
C.椭圆C的蒙日圆方程为![]() | D.长方形R的面积的最大值为![]() |
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2023-01-12更新
|
1339次组卷
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4卷引用:湖南省邵阳市2023届高三上学期一模数学试题
9 . 已知O为坐标原点,M是椭圆
上的一个动点,点N满足
,设点N的轨迹为曲线
.
(1)求曲线
的方程.
(2)若点A,B,C,D在椭圆
上,且
与
交于点P,点P在
上.证明:
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f036026cd92e9ad059c3f22a7658638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22234a15c785f14348e5e912308b5b28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若点A,B,C,D在椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f7a87f605c77a237facc0d05425887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
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2023-01-12更新
|
1579次组卷
|
10卷引用:湖南省湘潭市2023届高三上学期二模数学试题
23-24高三上·湖南永州·阶段练习
名校
解题方法
10 . 已知
为坐标原点,椭圆
的左、右焦点分别为
,直线
与椭圆
交于
两点,当
的周长取得最大值8时,
.
(1)求椭圆
的标准方程;
(2)过点
作斜率存在且不为0的直线
交椭圆
于
两点,若
,直线
与直线
交于点
,记直线
的斜率分别为
,试判断
是否为定值,若是,求出该定值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1be7302f2e9ff02fee3fcf26e77b1c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571b23af766b48bdd93fc228ca9c7860.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3492aa2ed6ee3b586343969821832881.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ebaa32f4f1f4f807ca9aeb7fb29951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9adacbefdb2a988cc6e0d92a51bbe8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3fbcd952073f38340769b8fbca5b23.png)
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