$latex i\hbar\frac{\partial}{\partial t}\left|\Psi(t)\right>=H\left|\Psi(t)\right>$
$latex e^{\i \pi} + 1 = 0$
$latex \fbox{{\LARGE EXAMEN DE SELECTIVIDAD JUNIO 2013. MATEM\'{A}TICAS II.}}$
$latex \begin{array}{ccc}
1 & 0 & 0 \\
0 & -4 & 10 \\
0 & -3 & 7%
\end{array}%$