设圆C与两圆(x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610019_ST/0.png)
)
2+y
2=4,(x-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610019_ST/1.png)
)
2+y
2=4中的一个内切,另一个外切.
(1)求C的圆心轨迹L的方程;
(2)已知点M(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610019_ST/2.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610019_ST/3.png)
),F(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610019_ST/4.png)
,0),且P为L上动点,求||MP|-|FP||的最大值及此时点P的坐标.
考点分析:
相关试题推荐
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610018_ST/images0.png)
如图,四棱锥P-ABCD中,底面ABCD为平行四边形,∠DAB=60°,AB=2AD,PD⊥底面ABCD.
(Ⅰ)证明:PA⊥BD;
(Ⅱ)若PD=AD,求二面角A-PB-C的余弦值.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610017_ST/images0.png)
如图,设P是圆x
2+y
2=25上的动点,点D是P在x轴上的摄影,M为PD上一点,且|MD|=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610017_ST/0.png)
|PD|
(Ⅰ)当P在圆上运动时,求点M的轨迹C的方程
(Ⅱ)求过点(3,0)且斜率
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610017_ST/1.png)
的直线被C所截线段的长度.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610016_ST/images0.png)
如图,在四棱锥P-ABCD中,平面PAD⊥平面ABCD,AB=AD,∠BAD=60°,E、F分别是AP、AD的中点求证:
(1)直线EF∥平面PCD;
(2)平面BEF⊥平面PAD.
查看答案
已知F
1、F
2分别为双曲线C:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610015_ST/0.png)
的左、右焦点,点A∈C,点M的坐标为(2,0),AM为∠F
1AF
2的平分线,则|AF
2|=
.
查看答案
已知矩形ABCD的顶点都在半径为4的球O的球面上,且AB=6.BC=2
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231447058161023/SYS201311012314470581610014_ST/0.png)
,则棱锥O-ABCD的体积为
.
查看答案