名校
1 . 已知圆
与圆
,过动点
分别作圆
、圆
的切线
,
,(
分别为切点),若
,则
的最小值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e25b317906ca42ab1c73779cb462ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce9c5575d39bbfde9c3db243a38646b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827539d066d1b78e7ef8bc1569864971.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/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c5363cbfe3505c6fee17a41d7d94b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c7a2c3513619bb714fb8abdb9a4eec.png)
A.5 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 已知椭圆
的左、右焦点分别为
,直线
与椭圆C交于M,N两点(点M在x轴的上方).
(1)若
,求
的面积;
(2)是否存在实数m使得以线段
为直径的圆恰好经过坐标原点O?若存在,求出m的值;若不存在,请说明理.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4402aeb853b22f20992156957ef0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa56540e90f98bfc7a1d0beca2ecf392.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42fc33bcfc63ec2f4940ccd3f862400.png)
(2)是否存在实数m使得以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2020-12-09更新
|
815次组卷
|
7卷引用:安徽省宣城市郎溪县七校2019-2020学年高二上学期期中数学(文)试题
安徽省宣城市郎溪县七校2019-2020学年高二上学期期中数学(文)试题安徽省太和中学2019-2020学年高二上学期期中考试数学(理)试题黑龙江省大庆市第十中学2019-2020学年高二上学期期末考试数学(理)试题吉林省油田高级中学2020-2021学年高二上学期期中考试数学(文)试题九师联盟(河南省)2022届6月高三摸底考巩固卷文科数学试题宁夏银川一中2021届高三第六次月考数学(文)试题(已下线)2.2 椭圆(基础练)-2021-2022学年高二数学同步训练精选新题汇编(人教A版选修2-1)
3 . 在平面直角坐标系
中,已知圆O:
和点M(1,0) .若在圆O上存在点A,在圆C:
上存在点B,使得△MAB为等边三角形,则r的最大值为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c0b9d8a577cce08895c6575ba4c5aa.png)
您最近一年使用:0次
2019高二下·全国·专题练习
名校
4 . 若直线
与圆
至少有一个交点,则实数
的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f70e1f599642d4cb2b0334ab4db128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc15f2b981aaf9955197196116ce077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.[0,+∞) | B.[4,+∞) |
C.(4,+∞) | D.[2,4] |
您最近一年使用:0次
2019-06-03更新
|
985次组卷
|
5卷引用:2019年6月7日 《每日一题》文数-直线与圆的位置关系
(已下线)2019年6月7日 《每日一题》文数-直线与圆的位置关系甘肃省临夏州临夏中学2017-2018学年高一上学期期末数学试题(已下线)专题08 直线和圆的方程的压轴题(二)-【尖子生专用】2021-2022学年高二数学考点培优训练(人教A版2019选择性必修第一册)(已下线)专题04 《圆与方程》中的易错题(2)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)河北省沧州市献县迎春中学2023-2024学年高二上学期第一次月考数学试题
名校
解题方法
5 . 已知圆
:
,
:
,过原点
作一条射线与圆
相交于点
,在该射线上取点
,使得
,圆
圆周上的点到点
的距离的最小值为
,则满足该条件的点
所形成的轨迹的周长为___________ ;
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9c94e8643cb7261458a9a0dad0d34f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d1ac5adb13362206cfc2f2fb624d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](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/e2180b373ccefb642f8bda608d8dcfbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a0abdf3eea0772418890031971fb56.png)
您最近一年使用:0次
2020-11-30更新
|
576次组卷
|
3卷引用:湖北省武汉市华科附联考体2020-2021学年高二上学期期中数学试题
湖北省武汉市华科附联考体2020-2021学年高二上学期期中数学试题(已下线)黄金卷18-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(新高考专用)湖北省武汉外国语学校2021-2022学年高二上学期10月月考数学试题
名校
6 . 已知圆
和点
,若定点
和常数
满足:对圆
上任意一点
,都有
,则(i)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
__________ ;(ii)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d812eca5a823c1fbda5e354c6d7f4e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51a73121078dad6f3167bb9011c4d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
解题方法
7 . 已知圆
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/16/f29a40b9-137a-4405-b372-40608f3c9627.png?resizew=159)
(1)若圆
与直线
相切于点
,求直线
的方程;
(2)已知
,圆
与
轴相交于
(点
在点
的左侧),过点
任作一条不与坐标轴垂直的直线,该直线与圆
相交于
两点,问:是否存在实数
,使得
?若存在,求出实数
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9bf846d833c63924792438b3808937.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/16/f29a40b9-137a-4405-b372-40608f3c9627.png?resizew=159)
(1)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](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/7789a500686c7a73770404ead6af0590.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1000c40056cb9ed50d7157b8dd998fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5ce23462dfd28929430b74b9590940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
8 . 已知
是双曲线
右支上的一点,
分别是圆
和
上的点,则
的最大值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/945611b2bebc85b1cada237f95e1677a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9681ad020adba72fa46cdd9034aee10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83d2ed19c67eef71d1a16a3c3fa724c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558a5b98f9046833521eb33ec39c88bc.png)
您最近一年使用:0次
2020-02-27更新
|
486次组卷
|
2卷引用:2020届云南省昆明市第一中学高三第五次检测数学(理)试题
解题方法
9 . 已知点M为点
在动直线
上的射影,若点N的坐标为
,则MN的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f4ec943ad1319d9df9ead145195817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a4a442e40edf6dc1ed3c24d711ac64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83da3d0ae2ccf6bcddea07ec62896e74.png)
您最近一年使用:0次
10 . 已知抛物线
.
(1)设
为抛物线
上横坐标为1的定点,
为圆
的一个动点,若
无公共点,且
的最小值为
,求
的值;
(2)已知
分别是抛物线的一条弦,且都不与
轴垂直,
与
相交于点
,
,若四边形
的四条边都存在斜率且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbb6cbf601c8d08db363827baefc296.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6687210666a762b57d7df2679f7baebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105c883b9db4ff53c879b82f457b7f12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c258c53a14590047273bf849d5713e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9829c6a040735f2965870076c784b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46893e2006c0abe95e2ad48e1455d35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f5360aaef3df28eda2b2d267edabeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7496bc74d5f35d405b3debed173afb51.png)
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