Error function
= Error function
{title2=$\operatorname{erf}$}
{wiki}
The error function is
$$
\operatorname{erf}(x)=\frac2{\sqrt\pi}\int_0^xe^{-u^2}\,du.
$$
It is odd and tends to $\pm1$ as $x\to\pm\infty$.
= Error function
{title2=$\operatorname{erf}$}
{wiki}
The error function is
$$
\operatorname{erf}(x)=\frac2{\sqrt\pi}\int_0^xe^{-u^2}\,du.
$$
It is odd and tends to $\pm1$ as $x\to\pm\infty$.