Soon After acquiring the constants A and B It can be reasonably easy to compute the integral ##int frac dx x^2 + 9 ## as it could possibly now be prepared as two more simple integrals. I attempted but I can not see how ##A,B## are constants? Front Gable: A https://gabletoppak.com/why-gable-top-cartons-are-making-a-splash-in-the-water-industry/