Question Number 118475 by mathmax by abdo last updated on 17/Oct/20
$$\mathrm{calculate}\:\int_{\mathrm{0}} ^{\infty} \:\frac{\mathrm{arctan}\left(\mathrm{2}+\mathrm{x}^{\mathrm{2}} \right)}{\mathrm{x}^{\mathrm{2}} +\mathrm{9}}\mathrm{dx} \\ $$
calculate-0-arctan-2-x-2-x-2-9-dx-