My table of Integrals has the overall case ##int frac dx x^two+a^2 ## for a 'standard' integral too, not only the situation wherever ##a=one##. But I feel this becoming a Calculus research issue it is expected on the OP to figure out how to make it happen. Hints got over. https://gabletoppak.com/eco-friendly-packaging-solutions-for-dairy-products-in-india/