名校
解题方法
1 . 在平面直角坐标系xOy中,已知椭圆Γ:
的离心率为
,直线l与Γ相切,与圆O:
相交于A,B两点.当l垂直于x轴时,
.
(1)求Γ的方程;
(2)对于给定的点集M,N,若M中的每个点在N中都存在距离最小的点,且所有最小距离的最大值存在,则记此最大值为
.
(ⅰ)若M,N分别为线段AB与圆O上任意一点,P为圆O上一点,当
的面积最大时,求
;
(ⅱ)若
,
均存在,记两者中的较大者为
.已知
,
,
均存在,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42aaceb687ffc763bdc5af3463c051a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631586067d81160678c2ddea983e62de.png)
(1)求Γ的方程;
(2)对于给定的点集M,N,若M中的每个点在N中都存在距离最小的点,且所有最小距离的最大值存在,则记此最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f513553d63e9c87a70dd6aa57f97b1.png)
(ⅰ)若M,N分别为线段AB与圆O上任意一点,P为圆O上一点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f513553d63e9c87a70dd6aa57f97b1.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f513553d63e9c87a70dd6aa57f97b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8207405e0cca2ccbd7643671bee4e40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a34aca6d603ad0587bd4e3f1a0b01d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad8c255f18185a9b643c70edf9b00b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89815ff222757cbfc9b0ae2bf096a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed107042c263ccf28435954b8a02082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e99cb8baa4733c0d58735590ddaf51.png)
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2024-03-21更新
|
2736次组卷
|
10卷引用:江苏省南通市2024届高三第二次调研测试数学试题
江苏省南通市2024届高三第二次调研测试数学试题江苏省扬州市2024届高三第二次调研测试数学试题江苏省泰州市2024届高三第二次调研测试数学试题(已下线)模块4 二模重组卷 第2套 全真模拟卷(已下线)江苏省南通市2024届高三第二次调研测试数学试题变式题 16-19(已下线)江苏省泰州市2024届高三第二次调研测试数学试题变式题16-19天津市南开中学2023-2024学年高三下学期第五次月考数学试题(已下线)高三数学考前押题卷3(已下线)专题8 考前押题大猜想36-40(已下线)压轴题02圆锥曲线压轴题17题型汇总-3
名校
解题方法
2 . 已知椭圆
:
,
,
.椭圆
内部的一点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea47c39b45a08749c34545c5ea63f39.png)
,过点
作直线
交椭圆于
,作直线
交椭圆于
.
、
是不同的两点.
(1)若椭圆
的离心率是
,求
的值;
(2)设
的面积是
,
的面积是
,若
,
时,求
的值;
(3)若点
,
满足
且
,则称点
在点
的左上方.求证:当
时,点
在点
的左上方.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42179166d21d549d0a67fc18eb23ddcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578faa3e92d60d4741a360898e46ce61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f213e991614465959aac77292c9bf09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea47c39b45a08749c34545c5ea63f39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a363df9127fb019f87ec53470c50dcc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1ec05e3cec27677ded7b4aecaa62d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bf58e5fea1189b33cf55d86335452f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(1)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800c5437d5aec66b82c4b24ecad191ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcbf4178c8ed5827e2c88636f82bf42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8395a33e03b51b63634c94da524bed41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43f76fcb7712ce0d0ddb4104f7b7236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac013f1df37f2a894a4fdf0cda00a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce88593d30c07d9b882049ed9688b7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3086ce1d297823309f83900cac1622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52b4f24969673c863b5aff4fb6751ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8138459c901da203d5a613736dd38150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2023-04-13更新
|
1608次组卷
|
8卷引用:上海市奉贤区2023届高三二模数学试题
上海市奉贤区2023届高三二模数学试题(已下线)模块八 专题9 以解析几何为背景的压轴解答题(已下线)专题08 平面解析几何-学易金卷上海市静安区市北中学2024届高三上学期12月月考数学试题(已下线)专题15 圆锥曲线综合(已下线)重难点14 圆锥曲线必考压轴解答题全归类【十一大题型】(举一反三)(新高考专用)-2上海师范大学附属中学2022-2023学年高二下学期期末数学试题(已下线)重难点03圆锥曲线综合七种问题解题方法-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)
名校
解题方法
3 . 已知椭圆
,椭圆
与椭圆
具有相同的离心率,且经过点
.
(1)求
的标准方程;
(2)若
的焦点在x轴上,
为
上一点,A、B两点在
上,且线段PA、PB的中点都在
上.
(i)当点P运动时,
的面积是否为定值?若是,求出该定值;若不是,请说理由;
(ii)记
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f036026cd92e9ad059c3f22a7658638.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/b86022205a7487439dd8d0897cd3bf19.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.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/b1241216f3c1cb5e73043dd1037f556d.png)
(i)当点P运动时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
(ii)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebd07c11236a5d229135c88e66c13778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43660b1543b3a2b46185f7629d28a963.png)
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