11-12高二上·福建莆田·期末
1 . 如图所示,正方形
的边长为
,椭圆
及双曲线
均以正方形顶点
为焦点且经过线段
的中点
,求椭圆
与双曲线
离心率之比为.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a080d28be13614c7aec1770bdc8633e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072ab92ed511a0d95e0b902507b883a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb21011ea821b91d539cb763aac649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/2011/2/19/1570001518731264/1570001524146176/STEM/b8d41428a06b4530af6261a8cc51b8fb.png?resizew=162)
您最近一年使用:0次
11-12高二上·福建莆田·期末
名校
解题方法
2 . 已知椭圆
,
为椭圆与
轴的一个交点,过原点
的直线交椭圆于
两点,且
,
.
(1)求此椭圆的方程;
(2)若
为椭圆上的点且
的横坐标
,试判断
是否为定值?若是定值,求出该定值;若不是定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21604721bb7cd8036ec14c16923b357c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06be89a7df58baa1216bb661c6e42804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36dfbc843b72d55db0296dd9d08dcca2.png)
(1)求此椭圆的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b53a13c6aa2f8f1848693da2e7687a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f490f4ec99d2793087c396a44c56039c.png)
![](https://img.xkw.com/dksih/QBM/2011/2/19/1570001518731264/1570001524277248/STEM/89de7f42fd0f4ba6aea673ea80cf4f74.png?resizew=228)
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10-11高三上·广东深圳·期中
名校
3 . 已知点
是⊙
:
上的任意一点,过
作
垂直
轴于
,动点
满足
.
(1)求动点
的轨迹方程;
(2)已知点
,在动点
的轨迹上是否存在两个不重合的两点
、
,使
(O是坐标原点),若存在,求出直线
的方程,若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08227ca941898eb34941f446ca8b1de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca730afd739da927f7cf1401feb261b.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4ecac9b79b986cb164919d31b7ed8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32ec8a33a4e970a2d37958ffb6476c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
12-13高二上·山东济宁·期末
名校
4 . 椭圆的两个焦点是F1(-1, 0), F2(1, 0),P为椭圆上一点,且|F1F2|是|PF1|与|PF2|的等差中项,则该椭圆方程是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2012-12-27更新
|
1575次组卷
|
13卷引用:福建省莆田市仙游第一中学2017-2018学年高二上学期期中考试数学试题
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