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圆锥曲线公式

更新时间： 2021-06-01 01:01:37

圆锥曲线的公式主要有以下：

1、椭圆∶焦半径∶a+ex(左焦点),a-ex(右焦点),x=a²/c

2、双曲线∶焦半径∶|a+ex|(左焦点)|a-ex|(右焦点),准线x=a²/c

3、抛物线(y²=2px)∶焦半径∶x+p/2准线∶x=-p/2

弦长=√k²+1*√(x1+x2)²-4x1x2以上是焦点在x轴的,y轴只需将x换成y即可。

关键词：圆锥曲线公式

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