如图,已知椭圆
的右焦点为
,右准线
与
轴交于点
,过椭圆上一点
作
于点
.若
平分
,且四边形
为平行四边形,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdd3be8e58a9150e5b1e2a43988fd82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fec93676b8125dfe3ba2b85a581aab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5005e695ab4644d568e24c7b6b55756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a1e39b09b372a1396d51be2e323f7a.png)
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095787505631232/2096476730310656/STEM/fe6e544e9aae4c20943faa36cb40c20a.png?resizew=153)
2012高三·江苏·竞赛 查看更多[1]
(已下线)2012年全国高中数学联赛江苏赛区复赛试题
更新时间:2018-12-14 09:55:44
|
【知识点】 直线与二次曲线方程及性质
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在直角坐标平面
中,凸四边形
的四个顶点都在双曲线
上,其中,点
、
在第一象限,点
、
在第三象限,对角线
经过原点
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f42b2a9736c8943106472a7398d2892.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e853b053d23277b0874566c0e9fab77.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/d13491ac-d672-4251-9191-80ba9c708e71.png?resizew=182)
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解答题-问答题
|
适中
(0.65)
【推荐2】函数
和
的图像交于两点,通过这两个交点的直线方程为
.求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ccad7f62b91486b73cede37fface7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd190f1397028ca8afceba91dd8a9501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f2416d1f75a45a314331146550832e.png)
您最近一年使用:0次