皮皮学，免费搜题
登录
搜题
【简答题】
已知A（-2，0），B（2，0），点C、D依次满足 | AC |=2， AD = 1 2 ( AB + AC ) ． （1）求点D的轨迹； （2）过点A作直线l交以A、B为焦点的椭圆于M、N两点，线段MN的中点到y轴的距离为 4 5 ，且直线l与点D的轨迹相切，求该椭圆的方程； （3）在（2）的条件下，设点Q的坐标为（1，0），是否存在椭圆上的点P及以Q为圆心的一个圆，使得该圆与直线PA，PB都相切，如存在，求出P点坐标及圆的方程，如不存在，请说明理由．
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】合理的灭火原理包括以下哪一项?() A疏散隔离法 B冷却灭火 C就近灭火 D窒息灭火
【简答题】Single-minded artists who continue their quest for fame even after failure might also like to know that failure has motivated some famous people to work even harder to succeed. Thomas Wolfe, the Ameri...
【简答题】Hundreds of years ago, life was much harder than it is today. People didn’t have modern machines. There was no modern medicine, either. Life today has brought new problems. One of the biggest is pollu...
【简答题】Hundreds of years ago, life was much harder than it is today. People didn't have modern machines then. There was no modern medicine, either. Life today is better than it used to be, but at the same ti...
【简答题】Reading Passage 1 Light Pollution Light Pollution is a threat to Wildlife, Safety and the Starry Sky A After hours of driving south in the pitch-black darkness of the Nevada desert, a dome of hazy gol...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
