直线
被圆C:
所截的弦长的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0465ced730a81aa95dabe559fa7269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54329a84abb204cecb237b2bf2ff2bb7.png)
A.![]() | B.6 | C.![]() | D.8 |
更新时间:2019-05-22 17:25:43
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【知识点】 圆的弦长与中点弦
相似题推荐
单选题
|
适中
(0.65)
【推荐1】已知直线
与圆
交于
两点,且点
到直线
的距离等于
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b584ef432bc03a383ed40ca2e120e45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85907e89e7df97925d4f830e37058bae.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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A.1 | B.![]() | C.1或![]() | D.![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐2】在平面中,已知点H到
,
的距离之比为
,记点H的轨迹为曲线C,直线
与C分别相交于M,N,且直线与坐标轴分别相交于点P,Q,已知定点
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac50f01dae1de9bb93d9a80bdd91d96.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次