Problema 1

Dadas las matrices $A = \begin{pmatrix} 1 & 2 \\ 3 & 4 \end{pmatrix}$ y $B = \begin{pmatrix} 5 & 6 \\ 7 & 8 \end{pmatrix}$, se calcula $A + B$:

\[
A + B = \begin{pmatrix} 1 & 2 \\ 3 & 4 \end{pmatrix} + \begin{pmatrix} 5 & 6 \\ 7 & 8 \end{pmatrix} = \begin{pmatrix} 1+5 & 2+6 \\ 3+7 & 4+8 \end{pmatrix} = \begin{pmatrix} 6 & 8 \\ 10 & 12 \end{pmatrix}
\]