已知椭圆C:
的长轴长为4,若点P是椭圆C上任意一点,过原点的直线l与椭圆交于M,N两点,记直线PM,PN的斜率为
,
,若
,则椭圆的方程为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ddcc2a96195973e9cd1dda4246f2ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebd63b865119ffb55d2725a4cbdc904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e7563ecdfb5e68d2b1ddc3230a901a.png)
20-21高二上·湖北鄂州·期末 查看更多[2]
更新时间:2021-02-24 09:15:18
|
【知识点】 椭圆中的定值问题
相似题推荐
填空题-单空题
|
较易
(0.85)
【推荐1】已知椭圆
的左、右顶点分别为
,过
的直线l交C于另外一点P,若直线l的斜率为2,则直线
的斜率是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279cefeb5c389a37a71e5fd3925f5954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐2】点
是椭圆
的左、右顶点,
是椭圆上不同于
的任意一点,若直线
的斜率之积为
,则椭圆
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55fb7ec4aa413693f4ecae59fe0e2084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b889efe020137b112bfafaa8e0becda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次