Question Number 74347 by mathmax by abdo last updated on 22/Nov/19
$${calculate}\:\int_{\mathrm{0}} ^{\infty} \:\:\:\:\frac{{arctan}\left({cos}\left(\pi{x}^{\mathrm{2}} \right)\right)}{{x}^{\mathrm{2}} +\mathrm{1}}{dx} \\ $$
calculate-0-arctan-cos-pix-2-x-2-1-dx-