设点A(2,2),F(4,0),点M在椭圆
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858016_ST/0.png)
上运动.求|MA|+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858016_ST/1.png)
|MF|的最小值.
考点分析:
相关试题推荐
已知抛物线y
2=4x与椭圆
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858015_ST/0.png)
有共同的焦点F
2.
(1)求m的值;
(2)若P是两曲线的一个公共点,F
1是椭圆的另一个焦点,且∠PF
1F
2=α,∠PF
2F
1=β,求cosα•cosβ的值;
(3)求△PF
1F
2的面积.
查看答案
已知椭圆
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858014_ST/0.png)
(a>b>0),A、B是椭圆上的两点,线段AB的垂直平分线与x轴相交于点P(x
,0).证明
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858014_ST/1.png)
.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858013_ST/images0.png)
给定椭圆方程
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858013_ST/0.png)
,求与这个椭圆有公共焦点的双曲线,使得以它们的交点为顶点的四边形面积最大,并求相应的四边形的顶点坐标.
查看答案
过椭圆C:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858012_ST/0.png)
的右焦点作一直线l交椭圆C于M、N两点,且M、N到直线x=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858012_ST/1.png)
的距离之和为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858012_ST/2.png)
,求直线l的方程.
查看答案
在双曲线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858011_ST/0.png)
-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212121702385803/SYS201310232121217023858011_ST/1.png)
=1上求一点M,使它到左右两焦点的距离之比为3:2,并求M点到两准线的距离.
查看答案