Question Number 30554 by abdo imad last updated on 23/Feb/18
$${find}\:\:\:\int_{\mathrm{0}} ^{\infty} \:\:\:\:\:\frac{{xcos}\theta\:+\mathrm{1}}{{x}^{\mathrm{2}} \:+\mathrm{2}{xcos}\theta\:+\mathrm{1}}{dx}\:. \\ $$
find-0-xcos-1-x-2-2xcos-1-dx-