Question

матика..............................

Answer 1

$intlimits^2_0 {} , dy intlimits^3_0 {xy} , dx = intlimits^2_0 {y(frac{x^{2}}{2}} , ) |_{0} ^{3} dy = intlimits^2_0 {y(frac{9}{2}-0)} , dy = frac{9}{2} frac{y^{2}}{2} |_{0} ^{2} = frac{9}{2} (frac{4}{2} -0) = 9$