代数 示例

The distance from the focus to the vertex is ${\displaystyle \left|p\right|}$. Subtract the ${\displaystyle x}$ coordinate of the vertex from the ${\displaystyle x}$ coordinate of the focus to find ${\displaystyle p}$.

从 ${\displaystyle 5}$ 中减去 ${\displaystyle 0}$。

将 ${\displaystyle y}$ 和 ${\displaystyle 0}$ 相加。

将 ${\displaystyle 4}$ 乘以 ${\displaystyle 5}$。

将 ${\displaystyle x}$ 和 ${\displaystyle 0}$ 相加。