已知点
,
是椭圆
的两个焦点,椭圆上的任意一点P使得
,且
的最大值为
.
(1)求椭圆的标准方程;
(2)若直线l与椭圆C交于A,B两点(A,B不是左右顶点),且以AB为直径的圆经过椭圆的右顶点.求证直线l过定点,并求出该定点的坐标.
![](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/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f595683f69d5d6b5ca76408b0ff6ff17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ef569668e797b1e94257fd5f4384dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec96333ce215db10a533acaa92b5103f.png)
(1)求椭圆的标准方程;
(2)若直线l与椭圆C交于A,B两点(A,B不是左右顶点),且以AB为直径的圆经过椭圆的右顶点.求证直线l过定点,并求出该定点的坐标.
22-23高二上·内蒙古包头·期中 查看更多[5]
内蒙古自治区包头市第一中学2022-2023学年高二上学期期中考试理科数学试题(已下线)数学(新高考Ⅱ卷A卷)(已下线)微点5 塞瓦定理、富瑞基尔定理、笛沙格定理、彭塞列闭合定理综合训练广东省汕头市金禧中学2024届高三上学期第一次阶段考数学试题内蒙古鄂尔多斯市西四旗2023-2024学年高二上学期期末数学试题
更新时间:2022-11-26 12:23:06
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【推荐2】已知
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【推荐1】在平面直角坐标系
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交于
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【推荐2】已知点
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【推荐1】已知椭圆
的左、右顶点分别为A,B,P为C上任意一点(异于A,B),直线AP,BP分别交直线
于M,N两点.
(1)求证:
;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12777a96242feadf7964af7823b7450c.png)
(2)设直线BM交椭圆C于另一点Q,求证:直线PQ恒过定点.
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【推荐2】已知椭圆
的离心率为
,
分别为椭圆的左、右焦点,点
为椭圆上一点,
面积的最大值为
.
(1)求椭圆
的方程;
(2)过点
作关于
轴对称的两条不同直线
分别交椭圆于
与
,且
,求证:直线
过定点.
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(1)求椭圆
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(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd4da08956db1f206c8ea026f4e52d.png)
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