若直线
按向量
平移后与圆
相切,则
的值为
![](https://img.xkw.com/dksih/QBM/2010/12/30/1569951243771904/1569951248916480/STEM/ba04b55d0ce2421795468759bad2dfcb.png)
![](https://img.xkw.com/dksih/QBM/2010/12/30/1569951243771904/1569951248916480/STEM/f80aad19105744f0b423117a35c47dde.png)
![](https://img.xkw.com/dksih/QBM/2010/12/30/1569951243771904/1569951248916480/STEM/44555837318444f88b2e384967eb51b3.png)
![](https://img.xkw.com/dksih/QBM/2010/12/30/1569951243771904/1569951248916480/STEM/7cdd2d53c84e46f791b84e5d499c9472.png)
A.8或-2 | B.6或-4 | C.4或-6 | D.2或-8 |
10-11高二上·广西桂林·期中 查看更多[2]
更新时间:2016-11-30 10:52:19
|
【知识点】 直线与圆的位置关系
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【推荐1】已知直线
:
与圆
:
交于
,
两点,则当弦
最短时直线
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64614a2ff4ea4e65db3e79a9976633c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0f3e15d7b753a178d7b546cbfdf4b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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