Question Number 34287 by math khazana by abdo last updated on 03/May/18
$${calculate}\:\int\int_{{D}} \:{xydxdy}\:{with} \\ $$$${D}=\left\{\left({x},{y}\right)\in{R}^{\mathrm{2}} /{x}\geqslant\mathrm{0}\:,{y}\geqslant\mathrm{0}\:,\:{x}+{y}\:\leqslant\:\frac{\mathrm{3}}{\mathrm{2}}\right\} \\ $$