My table of Integrals has the overall scenario ##int frac dx x^two+a^two ## to be a 'regular' integral as well, not simply the case where ##a=1##. But I believe this becoming a Calculus homework challenge it is expected from the OP to figure out how to get it done. Hints https://gabletoppak.com/boost-brand-visibility-with-customized-packaged-drinking-water/