已知圆
经过点
、
两点,且圆心在直线
上,圆
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c404c221810c4b661d2dc668f0c4248.png)
(1)求圆
的标准方程;
(2)求圆
与圆
的公共弦长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d2c83d4eb0a4690c86d52eb1c93236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dedbfbb8fab138bf0a71ee64d3068f87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b40e55a6ddc8b52d4b005ccd46552d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c404c221810c4b661d2dc668f0c4248.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
(2)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
更新时间:2021-02-06 09:43:01
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【推荐1】已知圆C:
的圆心C到直线
(
)的距离小于
.
(1)求m的取值范围;
(2)判断圆C与圆D:
的位置关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c62a5bc2ddd8b57ed3ab0e3adc507d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40897db190d657aa67e62a3bc0a49331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求m的取值范围;
(2)判断圆C与圆D:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd2a6bcb228b5fe200a4d4ed71ae3bd.png)
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【推荐2】已知圆
,圆
.
(Ⅰ)试判断圆
与圆
的位置关系;
(Ⅱ)在直线
上是否存在不同于
的一点
,使得对于圆
上任意一点
都有
为同一常数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2648f2824f2c8073a9f240271963663.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46b02686d8d331d07901bdc0bf79fc9.png)
(Ⅰ)试判断圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
(Ⅱ)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baea4fd7a86d2325b4e256f42b7e1551.png)
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【推荐1】已知圆
与两坐标轴相切,圆心在第一象限.
(1)若圆
也与两坐标轴相切,且两圆都过点
,求两圆的圆心距
;
(2)设点
在直线
上运动,点D为圆
上一点,且
.
①求圆
的方程:
②过点P作圆
的两条切线PA,PB,设切线PA与PB斜率分别为
,
,且
时,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(1)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547ca949ea6f238f4e58dde990e0dbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574741613676f7cb4fea4d913ba112cc.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbec8b46231e412ddce55cc96634e182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e78ef7ef7cc0ade96f56b4c19bdd3fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c7e4777174b4901acabde6639cfd5f.png)
①求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
②过点P作圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae3ab048431fdc75f9a2eef2a762f37.png)
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解题方法
【推荐2】圆
过点
,
,
.
(1)求圆
的方程;
(2)若点
,
,问圆
上是否存在点
,使得
,若存在,求出
的面积,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf8f5d8be251bf2848d6d10aa0340f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d9d44b8f720b8091cab29327c8ec71d.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c8c934fb978c8840bed9680408977c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fb572a6f07dcade5332bea766020f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07051df300191bf43656ba63e8d789fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
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【推荐1】已知圆
:
与圆
:
相交.
(1)求交点所在直线方程;
(2)若点P是圆C:
上任意一点,求P点到(1)中交点所在直线距离的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241093ee1fcfbe047e867cf433e01686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7eca8593173e1cab4c298cf560e8b4.png)
(1)求交点所在直线方程;
(2)若点P是圆C:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/837fbc4862ae7c699199535d991234a7.png)
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【推荐2】阿波罗尼斯(约公元前262-190年)证明过这样一个命题:平面内到两定点距离之比为常数k(
,
)的点的轨迹是圆,后人将这个圆称为阿波罗尼斯圆.若平面内两定点
,
,动点P满足
.
(1)求点P的轨迹方程.
(2)若圆C:
,且点P的轨迹与圆C相交于M,N两点,求线段MN的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c525393775354325cbf7839366ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b62194097ac66a5093c57fca2f5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241ce9bd28046ce9b90f43b391132884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85ea1f39d1dd63121c86343682053313.png)
(1)求点P的轨迹方程.
(2)若圆C:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754b2d0f98fbcd1f7be049cd6232391b.png)
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