My Table of Integrals has the overall scenario ##int frac dx x^two+a^2 ## as being a 'common' integral far too, not only the case the place ##a=1##. But I feel this remaining a Calculus research problem it is anticipated with the OP to figure out how to make it happen. https://gabletoppak.com/gabletop-pak-the-ideal-packaging-solution-for-dairy-products/