My table of Integrals has the overall circumstance ##int frac dx x^2+a^two ## as a 'conventional' integral much too, not simply the case exactly where ##a=one##. But I believe this becoming a Calculus research trouble it is predicted in the OP to determine how to get it done. Hints were https://gabletoppak.com/how-gable-top-pak-can-enhance-your-brand-and-customer-experience/