Question Number 32479 by prof Abdo imad last updated on 25/Mar/18
$${find}\:\int_{\mathrm{0}} ^{\infty} \:\:\:\:\frac{{dx}}{\left({x}^{\mathrm{2}} +\mathrm{1}\right)\left({x}^{\mathrm{2}} \:+\mathrm{3}{x}\:+\mathrm{1}\right)} \\ $$
find-0-dx-x-2-1-x-2-3x-1-