My Table of Integrals has the general scenario ##int frac dx x^two+a^two ## to be a 'conventional' integral far too, not merely the case wherever ##a=1##. But I do think this being a Calculus research challenge it is expected of your OP to figure out how to get it done. https://gabletoppak.com/boost-your-brand-with-premium-white-label-water-bottles/