My table of Integrals has the general scenario ##int frac dx x^two+a^two ## to be a 'typical' integral way too, not simply the situation in which ##a=one##. But I think this getting a Calculus research challenge it is anticipated from the OP to figure out how to make it happen. https://gabletoppak.com/boost-your-brand-with-premium-white-label-water-bottles/