名校
解题方法
1 . 已知圆C经过
、
,圆心C在直线
上,过点
且斜率为k的直线l与圆相交于M、N两点.
(1)求圆C的方程;
(2)若
(O为坐标原点),求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5511a368692de27c58ec48ce968de4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e88ebfb5c0d6cce558b515be06404d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b979396a703fb14715ba39232f5786a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
(1)求圆C的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b491f3e84390cd4c412aefeaae6e0ac8.png)
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2022-10-28更新
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453次组卷
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7卷引用:四川省凉山宁南中学2021-2022学年高二上学期第一次月考数学(理)试题
名校
2 . 已知
,
,
,斜率为
的直线l过点A,且l和以C为圆心的圆C相切.
(1)求圆C的方程;
(2)若不过C的直线m与圆C交于M,N两点,且满足CM,MN,CN的斜率依次为等比数列,求直线m的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af292f60c635d2bb4c38379c6bd04ac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29610a3415c1e795d35979a5a9ff69f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0b4afd16b79370532de44989d6c43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求圆C的方程;
(2)若不过C的直线m与圆C交于M,N两点,且满足CM,MN,CN的斜率依次为等比数列,求直线m的斜率.
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名校
3 . 在平面直角坐标系
中,
为坐标原点,已知圆
的圆心坐标为
,其中
且
,
轴、
轴被圆
截得的弦分别为
,
.
(1)求证:
的面积为定值,并求出这个定值;
(2)设直线
与圆
交于
,
两点,若
,求圆
的标准方程.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ebaf05d0e987d6bd6fd7742be88727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/823ab696d27d40920c39b8c910789380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056e249d0c33ef92b956f84937fa9324.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9531f1b05a0b88af18596eedff7ced53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2022-03-24更新
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158次组卷
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2卷引用:四川省绵阳市绵阳南山中学2021-2022学年高二上学期期中数学(文)试题
名校
解题方法
4 . 已知圆
的圆心在
轴上,且经过点
,
.
(1)求线段
的垂直平分线方程;
(2)求圆
的标准方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a290a27cce9bd59bb6d79822473d8b.png)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2022-03-24更新
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6卷引用:四川省绵阳市绵阳南山中学2021-2022学年高二上学期期中数学(文)试题
名校
解题方法
5 . 已知圆C的圆心在x轴上,且经过点
,
.
(1)求圆C的标准方程;
(2)过
斜率为
的直线与圆C相交于M,N,两点,求弦MN的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a18a7caa080988802ba1145b4fe4203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ea6b5f801158380a615c3f99f615e1.png)
(1)求圆C的标准方程;
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
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2022-03-04更新
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532次组卷
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7卷引用:四川省广安市岳池县2021-2022学年高二上学期期中考试数学(理)试题
四川省广安市岳池县2021-2022学年高二上学期期中考试数学(理)试题天津市滨海新区2020-2021学年高二上学期期末数学试题(已下线)专练28 直线与圆的方程综合检测卷(B卷)-2021-2022学年高二数学上册同步课后专练(人版A版选择性必修第一册)吉林省长春市实验中学2021-2022学年高二上学期期末数学试题重庆市青木关中学2021-2022学年高二上学期期末数学试题陕西省渭南市杜桥中学2023-2024学年高二上学期期中考试数学试卷陕西省宝鸡市渭滨区2023-2024学年高二上学期期末数学试题
6 . 已知圆C与直线
相切于点
,且圆心在x轴上.
(1)求圆C的标准方程;
(2)若直线l过点
,且被圆C所截得的弦长为6,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8290dda30e02a1247c0a10ceb09d973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bb7ff5012ac35f2e5fa64b0247ce93.png)
(1)求圆C的标准方程;
(2)若直线l过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dffbdc6dc7c0479261716cddd2c3f26.png)
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7 . 已知以点
为圆心的圆与直线
:
相切.
(1)求圆A的方程;
(2)设直线
,判断直线
与圆A的位置关系,试求
为何值时,直线
截圆A所得弦的弦长最小,并求弦长最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99ce0fdd3a34df8d5e913b7b9f6f3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea33a84e54e8535508821d0360e53c8.png)
(1)求圆A的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22963fe5adffc9757990e0616b6517c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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8 . 在三角形ABC中,三个顶点的坐标分别为
,
,
,且D为AC的中点.
(1)求三角形ABC的外接圆M方程;
(2)求直线BD与外接圆M相交产生的相交弦的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40630a669f4eedf626bc24851df10c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e30645f36e8628b9e25d53598d5174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d03310fa9440053c57d878acc06d02d.png)
(1)求三角形ABC的外接圆M方程;
(2)求直线BD与外接圆M相交产生的相交弦的长度.
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2021-12-06更新
|
806次组卷
|
6卷引用:四川省成都市树德中学2021-2022学年高二上学期11月阶段性测试数学(理科)试题
名校
解题方法
9 . 1.圆
的圆心为
,且与直线
相切,求:
(1)求圆
的方程;
(2)过
的直线
与圆
交于
,
两点,如果
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db7e6394cc8bbb2241ba6bf4dac5b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab0ffec8f46fe46fbc6e8e13d16a58b.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d759326db41ff030e36dc77633a1af1a.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5953da9c9a4c59d9a00780ed278e9da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2021-12-01更新
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3卷引用:四川省广安市武胜烈面中学校2021-2022学年高二上学期期中测试数学(文)试题
名校
10 . 在平面直角坐标系xOy中,已知
,直线
.设圆C的半径为1,圆心在直线l上.
(1)若圆心C也在直线
上,过点A作圆C的切线,求切线的方程;
(2)若点M满足
,求点M的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f94c4f6b762fddb0e313050ef6932eb.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/9e6e15daf7b14dbff32c390f4984dcfb.png)
(2)若点M满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed154dc722c0576255346d7f237969ac.png)
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