名校
1 . 已知圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ab11ba6b230c4309e1b899eb58daae.png)
(1)直线
过点
,且与圆
相切,求直线
的方程
(2)过圆C上一动点M作平行于y轴的直线m,设m与x轴的交点为N,若向量
,求动点
的轨迹方程
(3)若点
,在(2)的条件下,求
的最小值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ab11ba6b230c4309e1b899eb58daae.png)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d26e5a4e3472fd6b1dbc1ea628a3fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)过圆C上一动点M作平行于y轴的直线m,设m与x轴的交点为N,若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e850cc1752c481786f5b3ff4a31816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724e11601d3807c120713018d3405d65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99fb1b86b32555734e6cc4c8ee29116c.png)
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2021-11-26更新
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4卷引用:重庆市万州纯阳中学2021-2022学年高二上学期12月月考(B卷)数学试题