Test latex

The equation using PRE tag,

\int_{-\infty}^{\infty}e^{-x^{2}}\;dx=\sqrt{\pi}

, and here is the following text.

The equation using CODE tag,
\int_{-\infty}^{\infty}e^{-x^{2}}\;dx=\sqrt{\pi}
, and here is the following text.