已知椭圆
的离心率为
,且椭圆C过点
,点F为椭圆C的左焦点.垂直于x轴的动直线l与椭圆C相交于不同两点P,Q,直线PF与椭圆C的另一个交点为M(异于点Q),直线QM恒过定点B,则点B的坐标为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
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23-24高二上·云南玉溪·期末 查看更多[2]
云南省玉溪市2023-2024学年高二上学期期末教学质量检测数学试卷(已下线)2.2.2 椭圆的性质(十八大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
更新时间:2024-01-13 23:24:28
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【推荐1】已知椭圆
的离心率为
,
和
是
的左、右焦点.M是
上的动点,点N在线段
的延长线上,
,线段
的中点为P,则
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/496b79993189e901d9424045656f61b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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【推荐2】已知A,B分别为椭圆
的上、下顶点,F是椭圆C的上焦点,
为椭圆C上一点,若
,则椭圆C的离心率为________ ,椭圆C的方程为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef404abca1f78da130a38849f58559.png)
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【推荐1】已知点
和椭圆C:
,点
,
在
上,且
,
,
为垂足.存在定点
,使得
为定值,则定点
的坐标为______________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c03c6b8d7418edf20f474389971352.png)
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【推荐2】定义:若点
在椭圆
上,则以
为切点的切线方程为:
,已知椭圆
,点
为直线
上一个动点,过点
作椭圆
的两条切线
,
,切点分别为
,
,则直线
恒过定点______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
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