[math]\displaystyle{ \begin{eqnarray*} \latex \\ testing... \\ \begin{tabular}[c|c|c] \hline e^x & e^{x^2} & e_x \\ \hline \nabla & curl \vec{F} & div \vec{F} \\ \hline \& & \frac{\pi d \sin\theta}{\lambda} \\ \hline \end{tabular} \end{eqnarray*} }[/math]