Following locating the constants A and B It can be fairly basic to compute the integral ##int frac dx x^2 + 9 ## as it may now be created as two easier integrals. I tried but I can not see how ##A,B## are constants? Convenient to use, it comes with https://gabletoppak.com/is-it-legal-to-sell-natural-mineral-water-in-gabletop-cartons-tetra-paks-and-aluminium-cans-in-india/