Prosze o pomoc zad 78 str zad 2 i 3 pls daje naj na ocene evolution magazine

$\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right]\left \{ {{y=2} \atop {x=2}} \right.\lim_{n \to \infty} a_n\lim_{n \to \infty} a_n\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right]\prod_{a}^{b}$