Complex Analysis: Dogbone Contour Example #3

Today, we evaluate the integral from -1 to 1 of sqrt(1-x^2)/(1+x^2). Tried to one take this video (this video is straight from the camera) so it's not as smooth as the others. Might try to do this more often as editing can take a while, and probably not worth it to correct minor mistakes or stumbles. I'll also have more time to film rather than edit, which is always a plus.