设直线
经过定点
,
轴上的两个动点
与
的距离为2,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4efb50cc68a9fe58f092cff3e0439d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/12e6f0e94393fc6bbd9b4b83ede534ac.png)
A.![]() | B.![]() | C.2 | D.3 |
更新时间:2022-12-17 10:20:28
|
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解题方法
【推荐1】已知点
在边长为2的正八边形
的边上,点
在边
上,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc4ef841ac42e665add45cfc5c6bc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8613aeb43a48921982d8445f3fd65235.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】已知向量
,
(
),若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c1bed82512c105cdfe8d493ee25e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ec2d82ebbc5b4e14f4f372e5da71a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35f3251f815a33362e062ebe5c4cf1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7787902056794fd718bfeec12825522b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】已知点M为
外接圆O上的任意一点,
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228192386340d885a3265e38cb8d89fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57cfa3519b78d9d45a2b030dece8177.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐2】已知圆
的半径为1,过圆
外一点
作一条切线与圆
相切于点
,
,
为圆
上一个动点,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8daf17262bbe72c7cc5319a1882e91b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7edf4bb580f76aeecb327102cbe08f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
【推荐1】已知直线
的方程为
,则直线
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58c8baabd5281fc483930c7adf095f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.恒过点![]() ![]() | B.恒过点![]() ![]() |
C.恒过点![]() ![]() | D.恒过点![]() ![]() |
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【推荐2】直线
与圆
的位置关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce169646c902e3d51b1a71ae3946c23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
A.相交 | B.相切 | C.相离 | D.三种关系均存在 |
您最近一年使用:0次