名校
解题方法
1 . 若
,
,点
在圆
的外部,则
的范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44fbffcf19a245f3428ba0c35937993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8033ffef14bd4ea7fb31a60ee6acaab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219ba6c8a1b54598db1a78cab28d9d30.png)
您最近一年使用:0次
2018-01-24更新
|
1045次组卷
|
2卷引用:辽宁师范大学附属中学2018届高三上学期期末考试数学(文)试题
2 . 过
可作两条直线与圆
相切,则k的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf414d36efee17c0cb47bcde78788745.png)
A.![]() | B.![]() ![]() | C.![]() ![]() | D.![]() |
您最近一年使用:0次
3 . 已知圆
,若过点
可作圆
的两条切线,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d269e3d0bfe9b7d07ecebb47cba0fdb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
4 . 设点
,若在圆
上存在点N,使得
,则m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5ab73897d6a3fb4d500d3e55944742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41c60952b48311df7191eb14ee14ca8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
5 . 如图,在平面直角坐标系中,点
,锐角
的终边与单位圆
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/facb59ab-d066-4316-a2bf-5923729accc3.png?resizew=147)
(1)当
时,求
的值;
(2)若
,若点
在单位圆外,求
的取值范围;
(3)在
轴上是否存在定点
,使得对任意
,都有
恒成立?若存在,求出点
坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45516f9686130df59f8fb31b52b6b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/facb59ab-d066-4316-a2bf-5923729accc3.png?resizew=147)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4564e5162b6ba61483f2496f02bb35f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e0466bb18faf8983babb17a6fc13b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b94ef07d54f474823b72bc3f472749e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
6 . 在平面直角坐标系中,设点
,定义
,其中
为坐标原点,对于下列结论:
符合
的点
的轨迹围成的图形面积为8;
设点
是直线:
上任意一点,则
;
设点
是直线:
上任意一点,则使得“
最小的点
有无数个”的充要条件是
;
设点
是圆
上任意一点,则
.
其中正确的结论序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef66a1198626d46522fd5cbbcb25b7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4759683154382a581f2b2a01fd29c8ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4f7f4c636a14d0d953db30a75a549e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c1ea6f45906aadaf0d341f3f288dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87dd66cf060652315bfabccf616e35b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7a38df8daecddd82aea1a67a426928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9626e05194631455817d916560f126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a435736ae8bd57ab0299d5c684cc39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e636bddc1a3d7c006ac304e96cd2551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fce0745e9ae53f8e79f897253c9c7a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e996361d02e7392675a8bea976a83482.png)
其中正确的结论序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 已知
为坐标原点,点
在圆
:
上.
(1)求实数
的值;
(2)求过圆心
且与直线
平行的直线的方程;
(3)过点
作互相垂直的直线
,
,
与圆
交于
两点,
与圆
交于
两点,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0228042e28f9ba663dafe657e677cac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b95e298ba71c7a81195e0eedc79c221.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求过圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe5351a50aac766f146acd1a9a6e79e.png)
您最近一年使用:0次
2020-03-13更新
|
309次组卷
|
2卷引用:2017年湖南省普通高中学业水平考试数学试题
8 . 如果圆
至少覆盖函数
的一个最大值点和一个最小值点,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a51e6dc236a550d1364f5a23b6062ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f37a9768014d1cb31c821d2ba267a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
9 . 设
、
分别是抛物线
和圆
上的点,若存在实数
使得
,则
的最小值为________
![](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/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4caba0c551b1f00f6cf561a904e0d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a47d9b859a3ca077f7fc1a4cdc5b5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a4e6d107f47352f3f2159a547fdcd7.png)
您最近一年使用:0次
名校
10 . 已知点P(1,2)和圆C:
,过点P作圆C的切线有两条,则k的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af71c8a97cc6c714dfcb87c69321de93.png)
A.![]() | B.![]() | C.R | D.![]() |
您最近一年使用:0次