Following Finding the constants A and B It is really somewhat basic to compute the integral ##int frac dx x^2 + nine ## as it could now be written as two less difficult integrals. I tried but I simply cannot see how ##A,B## are constants? In distinction to your RSC, https://gabletoppak.com/gabletop-pak-leading-the-way-as-milk-carton-manufacturers-in-india/