My Table of Integrals has the overall scenario ##int frac dx x^2+a^2 ## to be a 'typical' integral too, not merely the case in which ##a=one##. But I feel this being a Calculus research problem it is anticipated from the OP to figure out how to make it happen. Hints https://gabletoppak.com/how-gabletop-cartons-are-helping-water-brands-combat-climate-change/