名校
1 . 已知焦点在
轴上的椭圆经过点
,焦距为
.
(1)求椭圆
的标准方程;
(2)点
是椭圆
上的任意点,求点
到直线
:
距离的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb56ece39b89b3fe97bb2d4c308cad8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcaada7649455fbebcdbdbb9a94e6a1.png)
您最近一年使用:0次
2019-10-25更新
|
1530次组卷
|
2卷引用:山东省青岛市青岛第五十八中学2019-2020学年高二上学期期中数学试题
解题方法
2 . 已知抛物线的参数方程为
(
为参数),若斜率为
的直线经过抛物线的焦点,且与抛物线相交于
两点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c878f22864c8bacafe3b802b243bb2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-03-03更新
|
181次组卷
|
2卷引用:2016-2017学年山东省烟台市高二上学期期末考试数学(文)试卷