Contour integration along a branch cut (example three)
Channel: MatheMagician
Date: 18/01/2021

In this video we will compute a real integral which is very similar to the one of the second example. Only a single minus sign is different; this cause a big difference though, because now the singularity is on the positive real axis (which is part of our contour). So we will see a pretty tricky contour integration, combining a branch cut and a singularity on the axis.