若圆
上的点到直线
的最大距离与最小距离的差为
,则实数
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56d42acf89e6ab5d6f53173627c50dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ae3392d72f9d4fc929ad5469fd88a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
20-21高三上·浙江绍兴·期末 查看更多[3]
更新时间:2020-03-05 00:15:41
|
【知识点】 圆上点到定直线(图形)上的最值(范围)
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【推荐1】我校校徽代表三种德性:一是虚心,代表学习;二是不断,代表工作;三是精诚团结,代表最后胜利.如图,这三个圆可看作半径为
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【推荐2】已知圆C:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2265ae62e9263d2c6162bd77f148161.png)
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