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抛物线焦点公式
更新时间: 2021-05-12 12:10:08  

抛物线焦点公式:

1、y2 =2pxp>0开口向右);

2、y2 =-2px(p>0)(开口向左);

3、x2 =2py(p>0)(开口向上);

4、x2 =-2py(p>0)(开口向下);

5、焦点坐标为(p/2,0)。

关键词: 抛物线 焦点 公式

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