Question Number 28983 by abdo imad last updated on 02/Feb/18
$${find}\:{the}\:{value}\:{of}\int_{−\infty} ^{+\infty} \:\frac{{x}^{\mathrm{2}} −\mathrm{1}}{{x}^{\mathrm{2}} +\mathrm{1}}\:\frac{{sinx}}{{x}}{dx}. \\ $$
find-the-value-of-x-2-1-x-2-1-sinx-x-dx-