Definition:Absolute Value/Definition 1/Also presented as

Absolute Value: Also presented as
Because $0 = -0$, the value of $\size x$ at $x = 0$ is often included in one of the other two cases, most commonly:
 * $\size x = \begin{cases}

x & : x \ge 0 \\ -x & : x < 0 \end{cases}$ but this can be argued as being less symmetrically aesthetic.