若圆
与圆
只有一个交点,则实数
的值可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c4071387bb5ce1ca4befeb767c0343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392c3594f2692b415bc7f71c25a15171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.1 | D.2 |
更新时间:2024-03-07 13:44:06
|
【知识点】 由圆的位置关系确定参数或范围
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【推荐1】已知圆
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A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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适中
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名校
【推荐2】若x、y满足x2+y2-2x+4y-20=0,则x2+y2的最小值是( )
A.![]() | B.5-![]() |
C.30-10![]() | D.无法确定 |
您最近一年使用:0次