My table of Integrals has the final situation ##int frac dx x^2+a^two ## like a 'typical' integral way too, not only the case exactly where ##a=one##. But I think this getting a Calculus homework challenge it is predicted of the OP to figure out how to make it happen. Hints https://gabletoppak.com/why-paper-water-bottles-are-gaining-popularity-in-kerala/