解答题-问答题 较难0.4 引用2 组卷1857
设A是圆
上的任意一点,
是过点A与
轴垂直的直线,D是直线
与
轴的交点,点M在直线
上,且满足
.当点A在圆上运动时,记点M的轨迹为曲线
.
(1)求曲线
的标准方程;
(2)设曲线
的左右焦点分别为
、
,经过
的直线
与曲线
交于P、Q两点,若
,求直线
的方程.
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/df91cfb00655492db243948145693c99.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/4c5625acf5824aab8527f2acc0bf255d.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/ef55461254f94fdb9c9b9592eac70b92.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/6d7d71de58004fda981d32a5280504b5.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/ef55461254f94fdb9c9b9592eac70b92.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/6d7d71de58004fda981d32a5280504b5.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/e2ab05b91f2b4bac94e7a0a13fba1947.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/242c7bc53cd4491e8b6c4d467bbbbbbc.png)
(1)求曲线
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/242c7bc53cd4491e8b6c4d467bbbbbbc.png)
(2)设曲线
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/242c7bc53cd4491e8b6c4d467bbbbbbc.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/816177211014411bb838ec89f0521632.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/92780370ef3446c2a451bab8907eedd3.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/92780370ef3446c2a451bab8907eedd3.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/e0b475ce6cf547e4b46367c45d5694bc.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/242c7bc53cd4491e8b6c4d467bbbbbbc.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/820e246825a64befa874989b02a5b7c2.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092153012224/1572092159115264/STEM/e0b475ce6cf547e4b46367c45d5694bc.png)
14-15高三下·广东江门·阶段练习
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