解题方法
1 . 已知圆
,圆
,
分别是圆
上两个动点,
是
轴上动点,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09716d8b01cb1fabdb0bc7f9adacc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/087c1c33af7fed19a6e4e91fe8a9a5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1aef9d6055007f2e89b5cd201f3177f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知正方体
的棱长为1,M为侧面
上的动点,N为侧面
上的动点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7253ffd3fc633d861810ee2e872188b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c52091eb745de866044477641a7c55f.png)
A.若![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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3 . 若圆
和圆
的交点为A,B,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bce76582958794b77d4bb9fdce96fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261a7f8ffece7dbdaba586c955dc98bb.png)
A.公共弦![]() ![]() |
B.线段![]() ![]() |
C.公共弦![]() ![]() |
D.P为圆![]() ![]() ![]() |
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名校
4 . 已知点P在圆C:
上,直线l:
与x轴、y轴分别交于A,B两点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1399236584cd9cf6251d1b2ce25564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1efb59dabebc33bc5698d7f84cd49b93.png)
A.点P到直线l的距离大于1 |
B.点P到直线l的距离小于7 |
C.当∠PAB最大时,![]() |
D.以BC为直径的圆与圆C的公共弦所在直线的方程为![]() |
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2023-11-18更新
|
251次组卷
|
4卷引用:江苏省南通市崇川区、通州区2023-2024学年高二上学期11月期中联考数学试题
名校
5 . 过直线
上一点
向圆
:
引切线,切点为
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4cb0990b93c9900bab2784bef4b10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84206d21aa3ed77b34939ccc0252838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d341082cc54b1cb7a790af9ec4a365d.png)
您最近一年使用:0次
2023-11-18更新
|
389次组卷
|
5卷引用:新疆伊犁州华·伊高中联盟2023-2024学年高二上学期期中数学试题
6 . 已知圆心为
的圆经过点
和
,且圆心在直线
上,求:
(1)求圆心为
的圆的标准方程;
(2)设点
在圆
上,点
在直线
上,求
的最小值;
(3)若过点
作圆
的切线,求该切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/405c1cf20f829db064c795171af51f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292dd14f24b8392e499c328c1ca82f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aefcbc03a5c916ebb20f891a0fe7e0d.png)
(1)求圆心为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1fd72f36c81a55cafa92739ee87f743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
(3)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed18bd80c6c4142f68e89f4ad44570b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2023-11-16更新
|
719次组卷
|
2卷引用:天津市五校联考2023-2024学年高二上学期期中考试数学试题
7 . 已知直线l:
和圆C:
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b836190054e7c9c31109aeaca3b62e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c52ae4f01e98276ec3cf114ef15861.png)
A.直线l过定点![]() |
B.对于![]() |
C.对于![]() |
D.若![]() ![]() |
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8 . 若点
是圆
:
上的动点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90037b49d0338c5370e31dd957a02f87.png)
A.![]() |
B.![]() |
C.![]() |
D.若点![]() ![]() ![]() |
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9 . 已知圆
和点
,点
,
为圆
上的动点,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baca988e757625c577e02752422a72d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef5f0accd8de4af1fe793d0d921c6023.png)
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2023-11-09更新
|
134次组卷
|
2卷引用:河北省张家口市张垣联盟2023-2024学年高二上学期11月月考数学试题
10 . 在平面直角坐标系中,对于点
,
,定义
为点
到点
的“折线距离”.
(1)已知
,
,求
;
(2)已知直线
.
(i)求坐标原点
与直线
上一点的“折线距离”的最小值;
(ii)求圆
上一点与直线
上一点的“折线距离”的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ff82ebdfad5e7de1c7487b0b817a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a53e311ee0b5085e7e5a45c606daa5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa43a1d3718a0ef35c35658341a163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1dab74e16403e8131f9f5b2a74f3a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d03fa28c117649b0fdfe17eed7b583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc297a82090363ab6984227e6f35e6b1.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e59480219e0af960aa6f68491813c9.png)
(i)求坐标原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(ii)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f25834d8218c53cb975c2a2fe7442a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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