解题方法
1 . 已知椭圆
的一个焦点为
,且椭圆经过点
.
(1)求椭圆的标准方程;
(2)设A、B是x轴上的两个动点,且
,直线AM、BM分别交椭圆于点P、Q(均不同于M),证明:直线PQ的斜率为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63309dbc3612815f6dbdee23d9a10adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51085d7a7dd2bacb95ee6182c26ddc7.png)
(1)求椭圆的标准方程;
(2)设A、B是x轴上的两个动点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a500b181d125b7c831d4d066ca4ad1b8.png)
您最近一年使用:0次
解题方法
2 . 已知椭圆
:
(
)的短轴长为
,
是椭圆
上一点.
(1)求椭圆
的方程;
(2)过点
(
为常数,且
)的直线
与椭圆
交于不同的两点
,
,与
轴相交于点
,已知
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a818c7b7f571f7173feb9b73424d5ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be17a78f969ea0ce201d42bb0485dc43.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5652e94063be35668450ec2f44347a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb6303671277c3091f0e787c59cdbdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d8a7d2305c0776ba8b54bbb7e60bbcb.png)
您最近一年使用:0次
解题方法
3 . 已知椭圆
的离心率为
,且经过点
,椭圆C的右顶点到抛物线
的准线的距离为4.
(1)求椭圆C和抛物线E的方程;
(2)设与两坐标轴都不垂直的直线l与抛物线E相交于A,B两点,与椭圆C相交于M,N两点,O为坐标原点,若
,则在x轴上是否存在点H,使得x轴平分
?若存在,求出点H的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb41f5860fa7d1c94cc57fabf44e7985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e380f331149fa273bc00856663effc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c42d88e496a17562d25195301e0ac2.png)
(1)求椭圆C和抛物线E的方程;
(2)设与两坐标轴都不垂直的直线l与抛物线E相交于A,B两点,与椭圆C相交于M,N两点,O为坐标原点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef54adb0b01f212dd43fcea5913ce72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905a43e5b7da602ecfa1dacc7c8d5b87.png)
您最近一年使用:0次
2022-05-11更新
|
1836次组卷
|
6卷引用:内蒙古赤峰市八校2023届高三第三次统一模拟考试联考理科数学试题
内蒙古赤峰市八校2023届高三第三次统一模拟考试联考理科数学试题四川省成都市2022届高三第三次诊断考试文科数学试题四川省成都市2022届高三第三次诊断考试理科数学试题(已下线)9.5 三定问题及最值(精练)(已下线)广东省江门市棠下中学2022-2023学年高三上学期数学试题变式题17-22(已下线)第28讲 圆锥曲线存在性问题-【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)
名校
解题方法
4 . 已知平面直角坐标系中,点
到抛物线
准线的距离等于5,椭圆
的离心率为
,且过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371e3151e76c4ab9c9a6eff1c7ad88cc.png)
![](https://img.xkw.com/dksih/QBM/2022/4/8/2953788433735680/2958471814668288/STEM/492c95c6-58c8-4402-9bd4-1928c79b8e50.png?resizew=212)
(1)求
的方程;
(2)如图,过点
作椭圆
的切线交
于
两点,在
轴上取点
,使得
,试解决以下问题:
①证明:点
与点
关于原点中心对称;
②若已知
的面积是椭圆
四个顶点所围成菱形面积的16倍,求切线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2bb2ff0cf1ae6dec186d4090d9c9c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f80080fac68745fe783b879cccb6140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2cfc8743c915f45bdccca70ab16648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371e3151e76c4ab9c9a6eff1c7ad88cc.png)
![](https://img.xkw.com/dksih/QBM/2022/4/8/2953788433735680/2958471814668288/STEM/492c95c6-58c8-4402-9bd4-1928c79b8e50.png?resizew=212)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
(2)如图,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a085d7d76b87d6ee759f022d5384ae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe2381b2935a320e50e12c573685206.png)
①证明:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
②若已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2022-04-15更新
|
1108次组卷
|
6卷引用:内蒙古呼和浩特市2022届高三第一次质量数据监测理科数学试题
内蒙古呼和浩特市2022届高三第一次质量数据监测理科数学试题(已下线)回归教材重难点04 圆锥曲线-【查漏补缺】2022年高考数学(理)三轮冲刺过关天津市滨海新区塘沽第一中学2022届高三下学期高考模拟数学试题(已下线)专题36 切线与切点弦问题(已下线)数学(天津B卷)黑龙江省鸡西市鸡东县第二中学2022-2023学年高三上学期期中数学试题
解题方法
5 . 已知椭圆
的一个焦点为
,且过点
.
(1)求椭圆
的方程;
(2)设
是椭圆
上一点,且不与顶点重合,
与
分别是椭圆
的左右顶点,点
为上顶点.若直线
与直线
交于点
,直线
与直线
交于点
.求证:
是等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351e9899738f59b14dc94001b8b270b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef233ad3db01fa3ce9ee94eaad8e64e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/dad2a36927223bd70f426ba06aea4b45.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8dcc9f79fe5f07f25447aa442ee14ad.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,过点
且平行与x轴的直线交椭圆
于A、B两点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/902dd0d0-4b0d-4b5e-86f0-94537b41ab94.png?resizew=236)
(1)求椭圆的标准方程;
(2)过点M且斜率为正的直线交椭圆于段C、D,直线AC、BD分别交直线
于点E、F,求证:
是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cda12642d59a5817e8990c43de20535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237f3e4b72fa5a52bccac514a5e52f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b7e59123eb43de595ff82d7ab4bde0f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/902dd0d0-4b0d-4b5e-86f0-94537b41ab94.png?resizew=236)
(1)求椭圆的标准方程;
(2)过点M且斜率为正的直线交椭圆于段C、D,直线AC、BD分别交直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34fec6fc9de1cf94f1c367f3d79d6ed.png)
您最近一年使用:0次
2020-04-20更新
|
351次组卷
|
2卷引用:内蒙古通辽市蒙古族中学2020届高三模拟(六)数学(理)试卷
名校
解题方法
7 . 已知椭圆
过点
且椭圆的短轴长为
.
(Ⅰ)求椭圆
的方程;
(Ⅱ)已知动直线
过右焦点
,且与椭圆
分别交于
两点.试问
轴上是否存在定点
,使得,
恒成立?若存在求出点
的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7900d79727bddd99e8a74ebe09d2945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)已知动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5260324e826d3080940cd60703064e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2020-04-07更新
|
783次组卷
|
4卷引用:2020届内蒙古赤峰二中普通高等学校招生第三次统一模拟考试文科数学