名校
1 . 集合
与直线
相交,且以交点的横坐标为斜率
,若直线
,点
到直线
的最短距离为
,则以点
为圆心,
为半径的圆的标准方程为 _________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023c0cbd508176c2c7e31f82c12794e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef605a7dce0a48fdec3728be12b882dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b956d243f455098ce3bd2a224e87e25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a42451bdbef6c82dbaf8e06f0614794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354f8e9d6cca157b95877d6540d16fb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
您最近一年使用:0次
2 . 已知点
,
分别为线段
上的动点,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
(1)若
求直线
的方程;
(2)证明:
的外接圆恒过定点(异于原点).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e91aee78b2293d162e117a7a15655a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c483745c2455e26d7e695f5727600ee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a090d241903d3f409644768e5127568e.png)
您最近一年使用:0次
2016-12-03更新
|
1040次组卷
|
8卷引用:江苏省南京第五高级中学2020年高考数学零模热身试题