设A
,B
是椭圆
上的两点,
为坐标原点,向量
,向量
.
(1)设
,证明:点M在椭圆上;
(2)若点P、Q为椭圆上两点,且
∥
试问:线段PQ能否被直线OA平分?若能平分,请加以证明;若不能平分,请证明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56720e2f2b0ddd72156da495923698da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2852ae85cfcc804b3192ea8543c88938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d513e18997f3a9e6da9cc6e3a1404546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9329107cc470884aabcb5adf88c498cd.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1184fc29daa16791f741e25fa2a0f18c.png)
(2)若点P、Q为椭圆上两点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
2011·江西新余·模拟预测 查看更多[1]
(已下线)2011届江西省新余一中高三第六次模拟考试数学理卷
更新时间:2016-11-30 17:01:50
|
【知识点】 根据直线与椭圆的位置关系求参数或范围
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】设
、
分别是椭圆
的左、右焦点.
(1)若
是该椭圆上的一个动点,求
·
的取值范围;
(2)设过定点
的直线
与椭圆交于不同的两点
、
,且
为锐角(其中
为坐标原点),求直线
的斜率
的取值范围.
![](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/c82e7d9f4f7ace849e09e9adcb786b7f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af48b76e202b995ac17bb1861f71252b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84fcd7dffad591ca6124da0e58ee91f0.png)
(2)设过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25ce60648ea5042ab5eb5702efe651a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知椭圆C:
的离心率为
,左、右焦点分别为
,
,过点
的动直线l与C交于A,B两点,且当动直线l与y轴重合时,四边形
的面积为
.
(1)求椭圆C的标准方程;
(2)若
与
的面积之比为2:1,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](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/c6e298293515d3c5d8343b668fe8541d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfffd420523729074995e9e55f464d4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)求椭圆C的标准方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c07ebcbfacda073208d483c58e8a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
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