名校
解题方法
1 . 在平面直角坐标系
中,已知椭圆
的长轴长为4,且经过点
,其中
为椭圆
的离心率.
(1)求椭圆
的标准方程;
(2)设椭圆
的左、右顶点分别为
,直线
过
的右焦点
,且交
于
两点,若直线
与
交于点
,求证:点
在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0f817d289cb729b212ff28cf3bcdd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333149db654e48b1eb504486e80fb117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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/a0ed1ec316bc54c37c4286c208f55667.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
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2 . 已知椭圆C:
的上下顶点分别为
,过点P
且斜率为k(k<0)的直线与椭圆C自上而下交于
两点,直线
与
交于点
.
(1)设
的斜率分别为
,求
的值;
(2)求证:点
在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82766cfd2b7c59c7fac5b827ae5863b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9055e1408371f84b8df59347ba7309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6555f723dc0cfebda260dae93fd3f988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c407500c3f3d395fdfdc366851ef3fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
(2)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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2022-08-26更新
|
1232次组卷
|
6卷引用:江苏省南京市六校联合体2022-2023学年高三上学期8月联合调研数学试题
江苏省南京市六校联合体2022-2023学年高三上学期8月联合调研数学试题(已下线)专题39 圆锥曲线中的定点、定值问题-2(已下线)第27讲 圆锥曲线中定直线问题-【同步题型讲义】2022-2023学年高二数学同步教学题型讲义(人教A版2019选择性必修第一册)(已下线)专题3.5 直线与椭圆的位置关系-重难点题型精讲-2022-2023学年高二数学举一反三系列(人教A版2019选择性必修第一册)(已下线)专题24 圆锥曲线八类压轴题(解答题)-1江苏省镇江中学2022-2023学年高三上学期12月月考数学试题
2022高三·全国·专题练习
解题方法
3 . 已知直线l经过椭圆C:
(a>b>0)的右焦点(1,0),交椭圆C于点A,B,点F为椭圆C的左焦点,△ABF的周长为8.
(1)求椭圆C的标准方程;
(2)若直线m与直线l的倾斜角互补,且交椭圆C于点M,N,
,求证:直线m与直线l的交点P在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
(1)求椭圆C的标准方程;
(2)若直线m与直线l的倾斜角互补,且交椭圆C于点M,N,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d66b5cc2f62feee24085edf253d1b04.png)
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解题方法
4 . 已知椭圆C;
的左右顶点分别为
,
,以线段
为边的一个正三角形与椭圆C的一个公共点为P(
,
).
(1)求椭圆C的方程;
(2)若过椭圆C的右焦点F的直线与椭圆C交于点M,N,直线
M,
交于点D,求证:点D在定直线l上,并求出直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c55e4f3eda94bc505f103b10bc1fee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca9e3eb562bbbe40fadca9813c332a5.png)
(1)求椭圆C的方程;
(2)若过椭圆C的右焦点F的直线与椭圆C交于点M,N,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b06b75fb4e379ff3b99e68f40136cad.png)
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2022-04-25更新
|
587次组卷
|
4卷引用:江西省赣州市于都县2022届高三模拟调研五(二模)数学(理)试题
名校
解题方法
5 . 已知椭圆C:
=1
的左焦点为F,右顶点为A,离心率为
,M为椭圆C上一动点,
面积的最大值为
.
(1)求椭圆C的标准方程;
(2)过点M的直线l:y=kx+1与椭圆C的另一个交点为N,P为线段MN的中点,射线OP与椭圆交于点D.点Q为直线OP上一动点,且
,求证:点Q到x轴距离为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b475908640ed47eb77de085dce0cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a08894790c36962924b20d731a1ba069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395b68bf47106a241e68e94e71a43232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb57d84f9bbcb3e30d4ce7e2e1e8604.png)
(1)求椭圆C的标准方程;
(2)过点M的直线l:y=kx+1与椭圆C的另一个交点为N,P为线段MN的中点,射线OP与椭圆交于点D.点Q为直线OP上一动点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a013a2aba586964ec6bc9cade0f460a.png)
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6 . 已知椭圆C:
的右焦点为F,上顶点为
,下顶点为
,
为等腰直角三角形,且直线
与圆
相切.
(1)求椭圆C的方程;
(2)过
的直线l交椭圆C于D,E两点(异于点
,
),直线
,
相交于点Q.证明:点Q在一条平行于x轴的直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae54b78e906f865fbdb351ffb4d335f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fee2afdacb11a6d025578bcaf576d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
(1)求椭圆C的方程;
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1158eaa2e338f564eb18de5bef1d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e1bca493e452800f697c5c640b4aa3.png)
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2022-12-21更新
|
529次组卷
|
3卷引用:湖南省长沙市A佳教育联盟2022-2023学年高三上学期12月联考数学试题
湖南省长沙市A佳教育联盟2022-2023学年高三上学期12月联考数学试题湖南省株洲市部分学校2022-2023学年高三上学期12月联考数学试题(已下线)专题13 圆锥曲线压轴解答题常考套路归类(精讲精练)-1
名校
解题方法
7 . 已知椭圆
,左焦点为
,上顶点为
,直线BF与椭圆交于另一点Q,且
,且点
在椭圆上.
(1)求椭圆C的方程;
(2)设
,
,M是椭圆C上一点,且不与顶点重合,若直线
与直线
交于点P,直线
与直线
交于点
.证明:
是等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e63a6e7ed1316d98c05fc1c48725519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5cd0c09b02a6ff9f33d7b23ac5b863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ae0092b5f5753b5676b686a35928af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e711087e7331de10cb213eaa0be0c5.png)
(1)求椭圆C的方程;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56a417b29be4b5bbd1848d48cf0998fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c096690418505bc934b91c8b568527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c2cc110e46ae4b3432814810e28bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9399c9a2a31b0e3165aea2d6ccc4f7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668438e15423368cd744445e824d18a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d91be6678276e3d05a94dee3dc7672f.png)
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2022-09-20更新
|
861次组卷
|
3卷引用:黑龙江省佳木斯市第一中学2022届高三第三次模拟数学(理)试题
8 . 如图,A、B是椭圆
长轴的两个端点,M、N是椭圆上与A、B均不重合的相异两点,设直线AM、BN、AN的斜率分别是
、
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/04386e54-81a0-49fa-b703-62c580fa81a7.png?resizew=193)
(1)若直线MN过点
,求证:
为定值;
(2)设直线MN与x轴的交点为
(t为常数且
),试探究直线AM与直线BN的交点Q是否落在某条定直线上?若是,请求出该定直线的方程;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279cefeb5c389a37a71e5fd3925f5954.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/dbf434334b09cc0fdd4e86e84e6ceb00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/04386e54-81a0-49fa-b703-62c580fa81a7.png?resizew=193)
(1)若直线MN过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8824f3fdb99f5768c6345039d556967.png)
(2)设直线MN与x轴的交点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fffad27b195220d9b31db743cd44eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/823ab696d27d40920c39b8c910789380.png)
您最近一年使用:0次
9 . 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)已知点
,直线
与曲线
的另一个公共点为
,直线
与
交于点
,试问:当点
变化时,点
是否恒在一条定直线上?若是,请证明;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395bbdcf87796c48d3a95fc923edb115.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/5881068127a39caf319492b4177204f0.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00127afdf543815af3ac4bc9bfc986a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.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)
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2022-08-31更新
|
1268次组卷
|
6卷引用:重庆市第八中学校2023届高三上学期入学考试数学试题
重庆市第八中学校2023届高三上学期入学考试数学试题(已下线)专题39 圆锥曲线中的定点、定值问题-2(已下线)第27讲 圆锥曲线中定直线问题-【同步题型讲义】2022-2023学年高二数学同步教学题型讲义(人教A版2019选择性必修第一册)江苏省南通市海安市实验中学2022-2023学年高二上学期1月月考数学试题(已下线)重难点突破16 圆锥曲线中的定点、定值问题 (十大题型)-2(已下线)微考点6-1 圆锥曲线中的非对称韦达定理问题(三大题型)
10 . 已知动点P与定点
的距离和它到定直线
的距离之比为
,记P的轨迹为曲线C.
(1)求曲线C的方程;
(2)过点
的直线与曲线C交于
两点,
分别为曲线C与x轴的两个交点,直线
交于点N,求证:点N在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求曲线C的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363598fd39f2269952dc6ddd1201346c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e246a2eb095a4034be95fa8f09a56527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336fb966aa274635b0351ab1637cbc98.png)
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