Question Number 124059 by Bird last updated on 30/Nov/20
$${find}\:\int_{\mathrm{0}} ^{\infty} \:\frac{{x}^{\mathrm{3}} {sin}\left(\mathrm{2}{x}\right)}{\left({x}^{\mathrm{2}} +{x}+\mathrm{1}\right)^{\mathrm{3}} }{dx} \\ $$
find-0-x-3-sin-2x-x-2-x-1-3-dx-