名校
解题方法
1 . 已知圆
与圆
,在下列说法中:
①对于任意的
,圆
与圆
始终相切;
②对于任意的
,圆
与圆
始终有四条公切线;
③
时,圆
被直线
截得的弦长为
;
④
分别为圆
与圆
上的动点,则
的最大值为4
其中正确命题的序号为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f1dc81fb995b3023d56f82ff964a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a2314d1f465b9940f08e0b5f55f88a.png)
①对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe211e0dea7a44863e5e1706633c3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a52e26180930ad5b56a8a45f28a0f2.png)
②对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe211e0dea7a44863e5e1706633c3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a52e26180930ad5b56a8a45f28a0f2.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee117579f5fc3944bbf7f342f50e450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/601d4c79cdabd1a49a6b8e6d026e663f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef812f839622326a7d7027cc806aaeb.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b09e2d46f94b9ca3caf3f8283619c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a52e26180930ad5b56a8a45f28a0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2a0f156c21a6d3387e9c5a15b373d1.png)
其中正确命题的序号为
您最近一年使用:0次
2022-10-13更新
|
975次组卷
|
8卷引用:山东省滨州市滨城区北镇中学2022-2023学年高三上学期数学模拟试题
2010·黑龙江哈尔滨·一模
解题方法
2 . 已知圆
与圆
,在下列说法中:
①对于任意的
,圆
与圆
始终相切;
②对于任意的
,圆
与圆
始终有四条公切线;
③当
时,圆
被直线
截得的弦长为
;
④
分别为圆
与圆
上的动点,则
的最大值为4.
其中正确命题的序号为______ .
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/931d726a0d4841ae9b1c03168c628d0a.png?resizew=220)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/5635d69a619847ba9aaf57794e9012c0.png?resizew=91)
①对于任意的
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/8369f20c30374e03a6b13f5d8f948a15.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/da9f02d104994c8485f6d4b5cd086f65.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/bdbc8b7398634450a3ff71a521b58b72.png?resizew=20)
②对于任意的
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/8369f20c30374e03a6b13f5d8f948a15.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/da9f02d104994c8485f6d4b5cd086f65.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/bdbc8b7398634450a3ff71a521b58b72.png?resizew=20)
③当
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/508345b0c6764b6d9d64ccd1991cf101.png?resizew=40)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/da9f02d104994c8485f6d4b5cd086f65.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/f15d3415524749a3ad5ff841d4133fd6.png?resizew=105)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/d6b1859244b4448a8674dc717d67ed9a.png?resizew=23)
④
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/02dccdc836cd4166996e9f20863e52e3.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/da9f02d104994c8485f6d4b5cd086f65.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/bdbc8b7398634450a3ff71a521b58b72.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/67ece29fd5b54627952aefe0fdad7421.png?resizew=35)
其中正确命题的序号为
您最近一年使用:0次