1 . 在平面直角坐标系
中,圆
,点
,
为抛物线
上任意一点(异于原点),过点
作圆
的切线
,
为切点,则
的最小值是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0a52784f84e9fcf104d7673cb564995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96ef7e9efc2681546f2320b108a1987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38d961bb46a2fb43dd2dd2c2355a9a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71ee762d565295f2ac0603b4d60c95d.png)
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2019-01-28更新
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3卷引用:【市级联考】江苏省南京市2018—2019学年高二第一学期期末调研理科试题