1 . 在平面直角坐标系
中,已知圆
的圆心在直线
上,且半径为
.
(1)若圆心
也在直线
上,求圆
的方程;
(2)已知点
,若圆
上存在点
,使
,求圆心
的横坐标的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db0a1cbf7b0ed76c443b953af8734d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(1)若圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd6ef43ad29077d67b4035748729a5c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c22d062601ae242e655159f4ef8725e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9b8629823993c2c0a95901052adc05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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解题方法
2 . 已知圆C过点
,
,
.
(1)求圆C的方程;
(2)若直线
与圆C交于两点A,B,且
,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76841988ca278b48da8963f9a5b7d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c441c7e1d4bc397894cc8a6a169e0d58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bf5f59dbbaa5c1b01fd4762ec72600.png)
(1)求圆C的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1183bd676a8674dea641ae407fa7023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dfc9d1109fe41145cc892b5702d9fb.png)
您最近一年使用:0次
2023-05-14更新
|
702次组卷
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4卷引用:北京市第十二中学2022-2023学年高二下学期期中数学试题
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3 . 已知圆的一条直径的端点分别是
,
,则该圆的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed19109a90fa98ea44e3a94bc44ca548.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-10-01更新
|
771次组卷
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5卷引用:北京十二中2020-2021学年高二上学期期中数学试题
4 . 以
为圆心,半径为2的圆的标准方程为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ebd2da016e7029c4dd72b9e377190c.png)
您最近一年使用:0次
2016-12-03更新
|
601次组卷
|
2卷引用:北京市丰台区2023-2024学年高二上学期期中练习数学试题(B)