解题方法
1 . 已知点
为抛物线
上的动点,点
在
轴上的射影为
,点
的坐标是
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448676970496/STEM/4cbe21fcac614cdfba81549e742377ae.png?resizew=59)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448676970496/STEM/d08b088180ea4a9cab974bafb276e7ff.png?resizew=47)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448676970496/STEM/0d3eaf38dea04547b277164f393ccef3.png?resizew=75)
A.8 | B.![]() | C.10 | D.![]() |
您最近一年使用:0次
名校
2 . 抛物线
上的一点到其焦点距离为3,则该点坐标为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
您最近一年使用:0次
2016-12-04更新
|
429次组卷
|
3卷引用:2015-2016学年辽宁省大连市第二十高级中学高二上期中文科数学试卷