Immediately after finding the constants A and B It really is somewhat simple to compute the integral ##int frac dx x^2 + nine ## as it can now be composed as two simpler integrals. I tried but I are unable to see how ##A,B## are constants? Photon 'time bins' and https://gabletoppak.com/how-gable-top-pak-can-enhance-your-brand-and-customer-experience/