1 . 已知平面内到两个定点A,B的距离之比为定值![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
的点P的轨迹是圆.在平面直角坐标系xOy中,已知
,若
,则下列关于动点P的结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaaab06b334adaa6e61d5b139e8fcbc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589402e5266963ba0ed077618c22212e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
A.点P的轨迹所包围的图形的面积等于![]() |
B.当P、A、B不共线时,△PAB面积的最大值是6 |
C.当A、B、P三点不共线时,射线PO是∠APB的平分线 |
D.若点![]() ![]() ![]() |
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2022-03-26更新
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1201次组卷
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4卷引用:广东省佛山市三水区三水中学2022-2023学年高二上学期第二次统考(11月)数学试题
2 . 已知圆C:
和点
,若点N为圆C上一动点,点Q为平面上一点且
,则Q点纵坐标的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7582217367ed8f7d2b68154553cfb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706e0350fd1c36a4e3c66868a8218a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3cc1408fd2ed22dc895396afbd9e06.png)
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