2022·全国·模拟预测
1 . 已知圆C:
,直线l过点
,若将圆C向上平移4个单位长度,再向右平移3个单位长度得到圆
,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577620a3b886932bbcf2f2f3dd725d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
A.若直线l与圆C相切,则直线l的方程为3x+4y-10=0 |
B.若直线l与圆C交于A,B两点,且![]() |
C.若过点![]() ![]() ![]() ![]() |
D.若Q是x轴上的动点,QR,QS分别切圆![]() |
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2 . 在平面直角坐标系
中:
①圆C过
和
,且圆心在直线
上;
②圆C过
三点.
(1)在①②两个条件中,任选一个条件求圆C的标准方程;
(2)在(1)的条件下,过直线
上的点
分别作圆C的两条切线
,
(Q,R为切点),求直线
的方程,并求弦长
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
①圆C过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e729a860cfd19d075a037b497bbfa04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ce6e716f2a085b503b1ba7c8fc00cd.png)
②圆C过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3951c7f9b73330f7f29b4eae7306c9.png)
(1)在①②两个条件中,任选一个条件求圆C的标准方程;
(2)在(1)的条件下,过直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e8da3e18d6d9d3ccd5974f2c187e44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902f97913e1af1e6c793f7edfe6b2114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7b816eca15d4b7d060013df53edd53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab59f50134d9bd1f2ad7e8dabcd5af9.png)
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3 . 已知圆
和圆
的公共弦所在直线经过原点,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae972938877d697690ae10acdc00e0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db2a82d6bb2420948f4ca2bdd214e97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.6 | B.4 | C.![]() | D.![]() |
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2022-12-12更新
|
387次组卷
|
2卷引用:江西省2022-2023学年高二上学期12月统一调研测试数学试题
21-22高二·全国·课后作业
4 . 某同学发现了一个现象:在求圆的公共弦AB(即两个圆相交时,两个交点的连线)所在直线的方程恰好与两个圆的方程相减消掉二次项
,
后所得的方程一样.由此,他提出了一个猜想:对于两个圆
与
,直线
就是两个圆的公共弦所在直线的方程.你认为他的猜想对吗?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a476588acbf41d798cc234a52fa21a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545697b8c6e67c7bdf9276197a071464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8684353768873b5a3cdfba9db7a359fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180c72a33a63795986f7bbf5247e171a.png)
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5 . 平面直角坐标系
中,已知圆
,圆
,现在圆
的圆心沿
轴向右平移1个单位长度,则在这一过程中下列结论不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9edf67c2e68042e26faefd72455386c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3240152e6abd352e5b7123eea4439e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.圆![]() ![]() |
B.则最终两个圆公共弦所在的直线方程为![]() |
C.过点![]() ![]() ![]() |
D.移动之后两圆的公共弦长为![]() |
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2021·全国·模拟预测
6 . 已知圆C:
,直线l:
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296ae2cc4865ae1ba2cde9223bcc79be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c9b1a52deea106fd46c0af4e9d47b8f.png)
A.若圆![]() ![]() |
B.圆C上一点到直线![]() ![]() |
C.若直线l与圆C相交于A,B两点,则![]() ![]() |
D.若圆C与直线l相交于点P,Q,且![]() ![]() |
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解题方法
7 . 如图,点
,
,
,
是以
为直径的半圆,
是以
为直径的半圆,
是以
为直径的半圆,三段弧构成的曲线记为
,给出下列四个结论:
①曲线
围成的图形面积为
;
②
所在圆与
所在圆的公共弦的弦长为
;
③过点
的直线
与
所在圆相交所得弦长为2,则直线
的方程为
,或
;
④直线
与
所在圆相交于
,
两点,则
,
.
其中所有正确结论的序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29610a3415c1e795d35979a5a9ff69f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49dd31773f55719ebd91ed3389d0de68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
①曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0209c599c13d645a2bd672ebe4fa06.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
③过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7f6a03826a5ad351c1f7ca553a6945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c854f1724e33a2706282c945ef320a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8a3365e99f926b1dafa901ab232152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8198c3b302b3820e86763428eb1e91cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3463ced6030af957f13f9ba05b977c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27ec4efc046f109816f223df09fd77f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc33cc8cca3772341f48ddcceb016b8.png)
其中所有正确结论的序号是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/b5b2c74c-e3c3-4c3c-b48f-5734ae3b3dd6.png?resizew=193)
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8 . 已知圆
,点
在圆O外,以线段OP为直径作圆M,与圆O相交于A,B两点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc12c55f2676aeb4f696f4a84e4d65b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827539d066d1b78e7ef8bc1569864971.png)
A.直线PA,PB均与圆O相切 |
B.当![]() ![]() |
C.当![]() ![]() |
D.若![]() ![]() |
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9 . 设O为坐标原点,以曲线
上任意一点M为圆心作圆M,圆M与y轴交于C,D两点,若圆M过点
时,
.
(1)求曲线
的方程;
(2)若圆M与直线
相切,设圆M与圆
相交于A,B两点,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b2bb30137f92479d11827ee769f001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c914d89dabcbf9a371de7df792697f3.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)若圆M与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b556b1a9944719cf423e90f8df16c773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876921803b89720587d6c2320c2b5082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beeddea97a422e65d8670f212c5dde92.png)
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名校
解题方法
10 . 已知圆
与圆
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2f79db799389a07862a81e9dc54ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
A.若两圆外离,则![]() ![]() |
B.当![]() |
C.若两圆相交,则![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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2022-11-22更新
|
199次组卷
|
2卷引用:山东省潍坊市五县市2022-2023学年高二上学期期中数学试题