圆
与圆
的公共弦长为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d5ec34c7bb0da25d361b8042e7d342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6eda90ea9d02be704b0d6fabbc8f8bc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-22 06:57:02
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【推荐1】圆
与圆
交于A、B两点,则过A、B两点的直线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b3b247a4182726a9b05c13d94a5d3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cb795a78ee91833445b70ae3293c70.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
【推荐2】已知圆
:
和圆
:
交于A,B两点,则下列结论中,正确的个数为( )
①两圆的圆心距
;
②直线AB的方程为
;
③
;
④圆
上的点到直线
的最大距离为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30093078a92ef2c2d79ab24d82b7b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/977b815cbf346b4778d537df09283bc9.png)
①两圆的圆心距
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b4d41716791c334807530f5093524a.png)
②直线AB的方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b979396a703fb14715ba39232f5786a.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff1c07d3ab5f594be5fffe13ebaaccb.png)
④圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec96333ce215db10a533acaa92b5103f.png)
A.1 | B.2 |
C.3 | D.4 |
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解题方法
【推荐1】已知圆
:
,点P为直线
上一动点,过点P向圆
引两条切线PA,PB,A,B为切点,则直线AB过定点( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08227ca941898eb34941f446ca8b1de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be5e9da07e14cdc3898d83f9f175831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】圆
与圆x2+y2﹣4x=0的公共弦长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ccbfcf49cd86f7e4530972544cef32.png)
A.1 | B.2 |
C.![]() | D.![]() |
您最近一年使用:0次