Gaussian Integral 2 u substitution

Welcome to the awesome 12-part series on the Gaussian integral. In this series of videos, I calculate the Gaussian integral in 12 different ways. Which method is the best? Watch and find out! In this video, I use a simple u-sub to calculate the Gaussian integral. Note: This series of videos is based on Keith Conrad's notes, which can be found here: http://www.math.uconn.edu/~kconrad/bl...