Question

Write a letter to a classmate who has been absent from school for a week and inform him about the important things that happened during his absence

Answer 1

$\beta x_{123} \frac{x}{y} \alpha \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \geq \lim_{n \to \infty} a_n$