在平面直角坐标系
中,
为坐标原点,点
,设圆C的半径为1,圆心
在直线
上,
(1)若圆心C也在直线
上,求圆C的方程;
(2)若圆C上存在点M,使
.求圆心C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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f94c4f6b762fddb0e313050ef6932eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad0f00d7f0acc53d9774923580a60bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139189550dc26d6130088799c1e65581.png)
(1)若圆心C也在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1882d2f789de61b5b7e3ec952e13b99e.png)
(2)若圆C上存在点M,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694882fa4a49a52d142ebe66a58590f9.png)
更新时间:2021-09-04 14:05:01
|
相似题推荐
【推荐1】已知圆C的圆心在直线
上,且圆C与x轴交于两点
,
.
(1)求圆C的方程;
(2)已知圆M:
,设
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且互相垂直的直线
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(1)求圆C的方程;
(2)已知圆M:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b7f485486a7c549b2bca3411810b7be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21872d8f6a518e0a2993ccf7a795ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21872d8f6a518e0a2993ccf7a795ed2.png)
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【推荐2】已知圆M过原点O,圆心M在直线
上,直线
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(1)求圆M的方程;
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系
中,已知n个圆
与x轴和线
均相切,且任意相邻的两个圆外切,其中圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88affa29d90a860b9b1426ea0aa6d6cb.png)
.
![](https://img.xkw.com/dksih/QBM/2022/1/24/2895956151328768/2910413170204672/STEM/e18c334f-531c-44b4-998b-a7f88457afc1.png?resizew=191)
(1)求数列
的通项公式;
(2)记n个圆的面积之和为S,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404b56436b773a089669b464422e71ef.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88affa29d90a860b9b1426ea0aa6d6cb.png)
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(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记n个圆的面积之和为S,求证:
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解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】在平面直角坐标系
中,已知半径为4的圆
与直线
相切,圆心
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的方程;
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与圆
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0d066ec7394c09d25a0d63b787ea6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
您最近一年使用:0次