名校
1 . 已知点
为抛物线
上的动点,点
在
轴上的射影是
,
点坐标为
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b894967b390cf5c38bb4c9835387f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69c5214d6569747e6124b288fc86b3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3979f27823cdcba516dfa885d8afe19d.png)
A.![]() | B.4 | C.![]() | D.5 |
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2019-03-16更新
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477次组卷
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2卷引用:【校级联考】湖南省湘潭县一中、双峰一中、邵东一中、永州四中2018-2019学年高二下学期优生联考数学(理科)试题