名校
解题方法
1 . 已知椭圆
的离心率为
,椭圆
的动弦
过椭圆
的右焦点
,当
垂直
轴时,椭圆
在
处的两条切线的交点为
.
(1)求点
的坐标;
(2)若直线
的斜率为
,过点
作
轴的垂线
,点
为
上一点,且点
的纵坐标为
,直线
与椭圆
交于
两点,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069ffc1e3936d254303d588e1a70a3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](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/ac047e91852b91af639feec23a9598b2.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a60e77043cfa243c212f9e340c5f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f43b5d69bd0a55499a8d70bf88077f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360496a4f5cc8a5faca5e089ae4f9531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769e7e506800af0ce9e6ecdc15fe4459.png)
您最近一年使用:0次
解题方法
2 . 在平面直角坐标系
中,椭圆
的右焦点为
,右准线
与
轴交于点
.点
是右准线
上的一个动点(异于点
),过点
作椭圆
的两条切线,切点分别为
.已知
.
(1)求椭圆
的标准方程;
(2)设直线
的斜率分别为
,直线
的斜率为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7481e14332e8f87515db53ebc5fc630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5bb9d2204b366da605e989c4153819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070cb22ade65e794ca9b68bf3992f791.png)
![](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/73465a1f9aa03481295bf6bd3c6903ac.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453acc0f502e29fabbe5676624ef2260.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed1e9cdd5a82f29ec89b2c53b4fa6f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4602fefda18bd0764dfb40e60e36acd3.png)
您最近一年使用:0次
3 . 已知离心率为
的椭圆C:
的一个顶点恰好是抛物线
的焦点,过点M(4,0)且斜率为k的直线交椭圆C于A,B两点.
(1)求椭圆C的方程;
(2)求k的取值范围;
(3)若k≠0,A和P关于x轴对称,直线BP交x轴于N,求证:|ON|为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
(1)求椭圆C的方程;
(2)求k的取值范围;
(3)若k≠0,A和P关于x轴对称,直线BP交x轴于N,求证:|ON|为定值.
您最近一年使用:0次
2021-03-06更新
|
827次组卷
|
5卷引用:陕西省西安中学2021届高三下学期第二次模拟考试数学(文)试题
陕西省西安中学2021届高三下学期第二次模拟考试数学(文)试题陕西省西安市高陵一中2021届高三二模数学(文)试题(已下线)专题32 仿真模拟卷01-2021年高考数学(文)二轮复习热点题型精选精练(已下线)专题1.11 圆锥曲线-定点、定值、定直线问题-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)精做05 解析几何-备战2021年高考数学大题精做(新高考专用)
名校
解题方法
4 . 已知点
为椭圆
上任意一点,直线
与圆
交于
,
两点,点
为椭圆
的左焦点.
(1)求证:直线
与椭圆
相切;
(2)判断
是否为定值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533b93dd6eb6b474481247736699c76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482aa1008b1009aa649b2e44a5d05a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0eea02b3e07ba8b9771e9401a81f983.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36719f1e764ee0e719b65c49fae84677.png)
您最近一年使用:0次
2020-04-22更新
|
459次组卷
|
3卷引用:陕西省西安市西北工业大学附属中学2020-2021学年高三下学期4月月考理科数学试题
5 . 已知曲线C:
(m∈R)
(1) 若曲线C是焦点在x轴点上的椭圆,求m的取值范围;
(2) 设m=4,曲线c与y轴的交点为A,B(点A位于点B的上方),直线y=kx+4与曲线c交于不同的两点M、N,直线y=1与直线BM交于点G.求证:A,G,N三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36cd32a789948a37088dff2891a21eff.png)
(1) 若曲线C是焦点在x轴点上的椭圆,求m的取值范围;
(2) 设m=4,曲线c与y轴的交点为A,B(点A位于点B的上方),直线y=kx+4与曲线c交于不同的两点M、N,直线y=1与直线BM交于点G.求证:A,G,N三点共线.
您最近一年使用:0次
2019-01-30更新
|
2943次组卷
|
12卷引用:陕西省西安市重点高中2021-2022学年高三上学期第一次考试理科数学试题
陕西省西安市重点高中2021-2022学年高三上学期第一次考试理科数学试题2012年全国普通高等学校招生统一考试理科数学(北京卷)(已下线)2014届高考数学总复习考点引领+技巧点拨第九章第7课时练习卷甘肃省天水市第一中学2021-2022学年高三上学期第一次考试 数学(理科)试题北京市中央民族大学附属中学2022届高三下学期三模数学试题北京名校2023届高三一轮总复习 第7章 解析几何 7.8 直线与椭圆的位置关系(2)(已下线)第五篇 向量与几何 专题9 完全四点形的调和性 微点1 完全四点形的调和性(已下线)第五篇 向量与几何 专题11 圆锥曲线中的蝴蝶定理 微点1 圆锥曲线中的蝴蝶定理人教B版(2019) 选修第一册 学习帮手 第二章 2.8 直线与圆锥曲线的位置关系北京市第五十七中学2019-2020学年高二上学期期中考试数学试题湖北省武汉中学2021-2022学年高二上学期12月月考数学试题内蒙古包头市第四中学2020-2021学年高二下学期4月月考数学(理)试题
名校
解题方法
6 . 已知椭圆C:
的离心率为
,长轴长为
.
Ⅰ
求椭圆C的方程;
Ⅱ
斜率为1的直线l过椭圆C的右焦点F,交椭圆C于A,B两点,设M为椭圆C上任意一点,且
,其中O为原点
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df4f17848c072b51e80d427d486e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fc860cece09bffcc2593dc7b11aee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb57575dea540c569265de158429425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd72b6a249a09c977c55226031195466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bbb391bcb279073a82e886896e47eea.png)
您最近一年使用:0次
2019-03-08更新
|
1407次组卷
|
3卷引用:陕西省宝鸡市宝鸡中学2019-2020学年高三上学期期中数学(理)试题
名校
7 . 设
是坐标原点,椭圆
的左右焦点分别为
,且
是椭圆
上不同的两点.
(Ⅰ)若直线
过椭圆
的右焦点
,且倾斜角为
,求证:
成等差数列;
(Ⅱ)若
两点使得直线
的斜率均存在,且成等比数列,求直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60652979ef1386b1d170bf48671d04f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅰ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.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/d6d0da8d77360826b3c500dcf812dc34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f141d0d3079409a3520f634d94042d08.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd9302d3864dae14c01c546bc0a293b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
2016-12-04更新
|
283次组卷
|
4卷引用:2016届陕西省高三下学期教学质检二数学(理)试卷