My table of Integrals has the general scenario ##int frac dx x^2+a^two ## being a 'normal' integral as well, not just the situation wherever ##a=1##. But I do think this remaining a Calculus research challenge it is predicted of your OP to figure out how to do it. Hints were https://gabletoppak.com/best-alternatives-to-plastic-water-bottles-in-kerala-for-a-greener-future/