已知两圆
,
,直线
,
(1)当圆
与圆
相交且公共弦长为4时,求r的值;
(2)当r =1时,求经过圆
与圆
的交点且和直线l相切的圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ffd90ad42a70af2ffa9c57834a5b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5bbc627f687c8b1d7b2a7f274f0dbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40291dacf051dbe79de9d4d535dc290b.png)
(1)当圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d1324d36c1cd1149ab3b544fe49c8c.png)
(2)当r =1时,求经过圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d1324d36c1cd1149ab3b544fe49c8c.png)
18-19高一下·江西上饶·阶段练习 查看更多[4]
【全国百强校】江西省玉山县一中2018-2019学年高一下学期第一次月考数学(理)试题广东省深圳市翠园中学2022-2023学年高二上学期期中数学试题广东省深圳市第三高级中学2022-2023学年高二上学期期中数学试题(已下线)2.5.2 圆与圆的位置关系 精练(6大题型)-【题型分类归纳】2023-2024学年高二数学同步讲与练(人教A版2019选择性必修第一册)
更新时间:2019-04-13 11:06:29
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【推荐1】如图,已知
,
,
是椭圆
的三个顶点,椭圆的离心率
,点
到直线
的距离是
.设
是椭圆上位于
轴左边上的任意一点,直线
,
分别交直线
于
,
两点,以
为直径的圆记为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/4cb23933-8f95-4ccf-b395-d9b4cffb11f9.png?resizew=189)
(1)求椭圆的方程;
(2)求证:圆
始终与圆
:
相切,并求出所有圆
的方程.
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98ee8ce2c56dccae6b63b5a9ca022b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/4cb23933-8f95-4ccf-b395-d9b4cffb11f9.png?resizew=189)
(1)求椭圆的方程;
(2)求证:圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3557809c066e68395b614535a7675e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5303146fa7877bef2e0bf9acaecaa962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3557809c066e68395b614535a7675e76.png)
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【推荐2】已知以
为圆心的圆
及其上一点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42a1a3d9009689d79eec5e9cef3ca97.png)
(1)设圆
与x轴相切,与圆
外切,且圆心
在直线
上,求圆
的标准方程;
(2)设平行于
的直线l与圆
相交于
两点,且
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210d5717b36fea63d24504f50aa63d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42a1a3d9009689d79eec5e9cef3ca97.png)
(1)设圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cc033406da2cdd342308972c6701f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设平行于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc0a056e9f279658f89d6842b2d33c0.png)
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【推荐1】已知圆
,圆
.
(1)求两圆的公共弦所在直线的方程及弦长;
(2)求两圆的公切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c08413cebfa9c2454191a8bc7ce65ada.png)
(1)求两圆的公共弦所在直线的方程及弦长;
(2)求两圆的公切线方程.
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【推荐2】已知圆
关于直线
对称,圆心
在第四象限,半径为1 .
(1)求圆
的标准方程;
(2)过原点
作
的两条切线
,切点分别为
,求直线
的方程及
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3fba9ed1f6d420be66049b63ce78eda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8a3365e99f926b1dafa901ab232152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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