名校
1 . 若圆
与圆
仅有一条公切线,则实数a的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99855445965a01665158620054410fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156733cfa9d890af3f0574b975be81c3.png)
A.3 | B.![]() | C.![]() | D.1 |
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2023-11-06更新
|
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7卷引用:福建省宁德市古田县第一中学2023-2024学年高二上学期第二次月考数学试题
2 . (多选)下列命题正确的有( )
A.直线![]() ![]() |
B.已知圆![]() ![]() ![]() ![]() ![]() |
C.圆![]() ![]() ![]() |
D.已知点![]() ![]() ![]() ![]() |
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名校
3 . 已知圆
:
.
(1)若圆
与圆
:
有三条外公切线,求
的值;
(2)若圆
与直线
交于两点
,
,且
(
为坐标原点),求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3eaf44e8fac880eec239aa55846f767.png)
(1)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6395d618263f0bd4ce2c584dd1b81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512f4c29ff276b7f35052ad4cc255ab5.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/5c0b06dc01c30d13f64be2ac6a1d811e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2021-11-29更新
|
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