My Table of Integrals has the overall scenario ##int frac dx x^two+a^2 ## like a 'conventional' integral as well, not simply the situation where ##a=1##. But I believe this staying a Calculus research issue it is anticipated with the OP to determine how to make it happen. Hints got over. https://gabletoppak.com/free-water-campaign-advertise-your-brand/