My table of Integrals has the final circumstance ##int frac dx x^2+a^two ## like a 'typical' integral as well, not only the situation where by ##a=one##. But I think this getting a Calculus research trouble it is expected from the OP to figure out how to get it done. Hints https://gabletoppak.com/how-white-label-water-bottles-can-skyrocket-your-business/