求过
三点的圆C的一般方程,并求直线
被圆C截得的弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b636cf8cb9d4fe7702345e012eadb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f885ffa0b17cf9561d821d90b3661903.png)
更新时间:2022-12-09 22:43:10
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解答题-问答题
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【推荐1】已知圆M过
,
,且圆心M在直线
上.
(1)求圆M的标准方程;
(2)过点
的直线m截圆M所得弦长为
,求直线m的方程;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f1e475e42d87abe04ed8f00e9ce817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95af4ed15c9acf3c3075cf8a7aadc0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(1)求圆M的标准方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec2a3f11bc67331cf95ecfbe6ea9e83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588c3822b7812e711b4ad86647b15dc1.png)
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【推荐2】
的顶点是
,
,
.
(1)求边
上的高所在直线的方程;
(2)求过点A,B,C的圆方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb9e88d3e58141dba299dcd8edc4e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb6fd712d967a36c027693a54f91470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac06bc73b408c6a70bd0f6d24ebb7d2c.png)
(1)求边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求过点A,B,C的圆方程.
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【推荐1】已知曲线
的参数方程为
(t为参数),以坐标原点为极点,
轴的正半轴为极轴建立极坐标系,直线
的极坐标方程为
.
(1)求曲线
的普通方程和直线
的直角坐标方程;
(2)若直线
与曲线
相交于
,
两点,求
,
两点间的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72bb69ef94983660d6f3484d7021aaaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319822e94dd211d0bc4244bfe24337ef.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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【推荐2】已知直线
,圆
,
表示函数
的图象.
(1)写出圆
的圆心坐标;
(2)求圆
被直线
截得的弦长;
(3)若点P在圆
上,点Q在N上,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8443cf6d07eda8cde76f4ca93cf5e454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6805411b52eaa53b47f5327df8897415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
(1)写出圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)若点P在圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d87446c9ef0230285d9b08127fce5c.png)
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