1 . 已知点P在曲线C:
上,曲线C在点P处的切线为
,过点P且与直线
垂直的直线与曲线C的另一交点为Q,O为坐标原点,若OP⊥OQ,则点P的纵坐标为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448e9f7c664386809e94431556bafbea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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名校
解题方法
2 . 已知椭圆E:
经过点
,且离心率
.
(1)求椭圆E的方程;
(2)设椭圆E的右顶点为A,若直线
与椭圆E相交于M、N两点(异于A点),且满足
,试证明直线l经过定点,并求出该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948261c41cc1509f023761d880c75582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de261e9b4defbc0be6440397031a87b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
(1)求椭圆E的方程;
(2)设椭圆E的右顶点为A,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3342ceb71dc21a5e6150caad2ce0b029.png)
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2020-07-11更新
|
522次组卷
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4卷引用:2019届江苏省徐州市第一中学高三下学期开学考试数学试题
2019届江苏省徐州市第一中学高三下学期开学考试数学试题江西省南昌市第十中学2019-2020学年高二5月摸底考试数学试题天津市滨海新区大港一中2021届高三(上)第一次月考数学试题(已下线)2020年高考全国1数学理高考真题变式题16-20题
名校
3 . 如图,C、D是离心率为
的椭圆的左、右顶点,
、
是该椭圆的左、右焦点, A、B是直线
4上两个动点,连接AD和BD,它们分别与椭圆交于点E、F两点,且线段EF恰好过椭圆的左焦点
. 当
时,点E恰为线段AD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/3cc52428-b954-4e33-9d58-7f9fc38507a9.png?resizew=228)
(Ⅰ)求椭圆的方程;
(Ⅱ)求证:以AB为直径的圆始终与直线EF相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/97b51bfc2ab3e49ad30b5ee2d57f13be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6cc3789c0e9b7d1226aa0de3327599.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/3cc52428-b954-4e33-9d58-7f9fc38507a9.png?resizew=228)
(Ⅰ)求椭圆的方程;
(Ⅱ)求证:以AB为直径的圆始终与直线EF相切.
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2019-02-12更新
|
786次组卷
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3卷引用:江苏省苏州市常熟中学2019-2020学年高二上学期12月月考数学试题
4 . 如图,在平面直角坐标系xOy中,已知椭圆C:
(a>b>0)的离心率为
,且右焦点到右准线l的距离为1.过x轴上一点M(m,0)(m为常数,且m∈(0,2))的直线与椭圆C交于A,B两点,与l交于点P,D是弦AB的中点,直线OD与l交于点Q.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/91666770-8cc4-4349-846d-9fc78499a400.png?resizew=168)
(1) 求椭圆C的标准方程.
(2) 试判断以PQ为直径的圆是否经过定点.若是,求出定点坐标;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/91666770-8cc4-4349-846d-9fc78499a400.png?resizew=168)
(1) 求椭圆C的标准方程.
(2) 试判断以PQ为直径的圆是否经过定点.若是,求出定点坐标;若不是,请说明理由.
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2020-01-18更新
|
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7卷引用:【市级联考】江苏省徐州市(苏北三市(徐州、淮安、连云港))2019届高三年级第一次质量检测数学试题
【市级联考】江苏省徐州市(苏北三市(徐州、淮安、连云港))2019届高三年级第一次质量检测数学试题(已下线)专题12 圆锥曲线的综合应用-《巅峰冲刺2020年高考之二轮专项提升》(江苏)2019年浙江省普通高中学业水平名校模拟卷(五)(已下线)数学-6月大数据精选模拟卷03(山东卷)(满分冲刺篇)(已下线)数学-6月大数据精选模拟卷02(北京卷)(满分冲刺篇)(已下线)数学-6月大数据精选模拟卷02(海南卷)(满分冲刺篇)(已下线)考点27 椭圆的综合问题-2021年高考数学三年真题与两年模拟考点分类解读(新高考地区专用)
5 . 如图,已知椭圆
过点
,离心率为
,
分别是椭圆
的左、右顶点,过右焦点
且斜率为
的直线
与椭圆
相交于
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/276fe1b7-50da-44b3-ae0f-e909e9fa1475.png?resizew=172)
(1)求椭圆
的标准方程;
(2)记
、
的面积分别为
、
,若
,求
的值;
(3)记直线
、
的斜率分别为
、
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bdac20e214b2cb3bd07f8d4778dcca.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://img.xkw.com/dksih/QBM/editorImg/2022/12/29/276fe1b7-50da-44b3-ae0f-e909e9fa1475.png?resizew=172)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef6516358878a47560b1d9eff2d5c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c2711907ebea07f0bafae5137dd0c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67bac29f3e7d49cc1ea1e5ae7384ee9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.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/a2a3f348a942d468f0d77c0dfbb41d87.png)
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2020-06-19更新
|
519次组卷
|
8卷引用:江苏省高邮市2019-2020学年高三上学期12月阶段性学情联合调研数学试题
江苏省高邮市2019-2020学年高三上学期12月阶段性学情联合调研数学试题江苏省盐城中学2019-2020学年高三下学期阶段检测数学试题江苏省淮安市清浦中学2019-2020学年高三下学期5月阶段性检测数学试题2020届江苏省盐城中学高三下学期5月高考模拟数学试题江苏省镇江市扬中市第二高级中学2021-2022学年高二下学期期初数学试题(已下线)数学-6月大数据精选模拟卷04(山东卷)(满分冲刺篇)(已下线)数学-6月大数据精选模拟卷03(北京卷)(满分冲刺篇)重庆市蜀都中学2020-2021学年高二上学期12月月考数学试题
名校
6 . 已知椭圆
的离心率是
,且过点
.直线
与椭圆
相交于
两点.
(Ⅰ)求椭圆
的方程;
(Ⅱ)求
的面积的最大值;
(Ⅲ)设直线
,
分别与
轴交于点
,
.判断
,
大小关系,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f718d4840a2fda33a6d38a8c121fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc71de41aa845ae97e1acfd054a25ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
(Ⅲ)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/5f1e29bc2fd46f8905a3c230cf543c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247edce0d122536f16de2899c7ad258e.png)
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2017-05-12更新
|
1139次组卷
|
8卷引用:【市级联考】江苏省淮安市2018-2019学年高二第一学期期末调研测试数学试题
名校
7 . 平面直角坐标系xOy中,已知椭圆C:
的离心率为
,且点
在椭圆C上.椭圆C的左顶点为A.
(1)求椭圆C的方程
(2)椭圆的右焦点且斜率为
的直线与椭圆交于P,Q两点,求三角形APQ的面积;
(3)过点A作直线与椭圆C交于另一点B.若直线
交
轴于点C,且
,求直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d695d4b8eb4f37c2c1bf46a190d461a4.png)
(1)求椭圆C的方程
(2)椭圆的右焦点且斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(3)过点A作直线与椭圆C交于另一点B.若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ff26eeabfaef6e944082999e39e814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2020-04-06更新
|
504次组卷
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3卷引用:江苏省苏州市吴江区2019-2020学年高三上学期第二次月考数学试题
8 . 已知一族双曲线
:
(
,且
),设直线
与
在第一象限内的交点为
,由
向
的两条渐近线作垂线,垂足分别为
,
.记
的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4bc0200e3fa77dce28106d44bcfb8e.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a78b3c84e7818ed70018eea40c72665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb1a45109c82237e6051d039e5bde04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7692514a24939fee3c3fed6e699cbd64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a78b3c84e7818ed70018eea40c72665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a78b3c84e7818ed70018eea40c72665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9b981aebc8c09de65e4bf84b8f0f22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4bc0200e3fa77dce28106d44bcfb8e.png)
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解题方法
9 . 在平面直角坐标系
中,设椭圆
的左焦点为
,左准线为
为椭圆
上任意一点,直线
,垂足为
,直线
与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/392f287c-4611-42ca-8151-a4af049e9541.png?resizew=201)
(1)若
,且
,直线
的方程为
.①求椭圆
的方程;②是否存在点
,使得
?若存在,求出点
的坐标;若不存在,说明理由.
(2)设直线
与圆
交于
两点,求证:直线
均与圆
相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ea803e31d2dedcf0590e0a0475e7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7b57a209fbac206ddc5b6a5648488b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/392f287c-4611-42ca-8151-a4af049e9541.png?resizew=201)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d70009d48ea5ed5e20cc5eff3d557e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0997aef37c85b3b959a948673bf65490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a14b8101715f591bc29720233eba8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8af0e61464dff86033fa54bb4ab3a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d42cb68c5c877a455ba7ac0a6b6a651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
名校
10 . 已知椭圆
的离心率为
,左、右焦点分别为
,
,焦距为6.
(1)求椭圆
的方程.
(2)过椭圆左顶点的两条斜率之积为
的直线分别与椭圆交于
点.试问直线
是否过某定点?若过,求出该点的坐标;若不过,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆左顶点的两条斜率之积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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2019-01-18更新
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775次组卷
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4卷引用:江苏省常州市2019-2020学年高二上学期期末数学试题