19.5.6 Compactness

Condition: \ [A = \ Left \ {(X, Y) \ MID X \ GEQ 0, \ QUAD 0 \ LeQ y \ leQ \ frac {x} {1+x^} \ right \} \] is it \ (A \) compact? Show that the function is \ (f (x, y) = e^{x y} \) in \ (a \) there is a minimum and maximum, what are they?