h1=. Sandbox

<?
  \begin{eqnarray}
    E &=& mc^2                              \\
    m &=& \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}}
  \end{eqnarray}
?>
 

Avem suport pentru <? \LaTeX ?> !
<? \frac{a^2 - b^2}{a + b} = a - b ?>