My table of Integrals has the overall circumstance ##int frac dx x^two+a^2 ## being a 'normal' integral way too, not simply the situation wherever ##a=1##. But I believe this remaining a Calculus homework difficulty it is anticipated of your OP to figure out how to do it. Hints were given https://gabletoppak.com/hc-issues-notice-over-plea-to-make-dwarka-plastic-free/