2: The Derivative
( \newcommand{\kernel}{\mathrm{null}\,}\)
Note: The videos for sections 2.1-2.5 were recorded based on an older edition of the book. This means that some of the section numbers I mention will no longer correspond to the same material, and screen-shots may look different. However, the content is essentially the same, and I've tried to put the videos in the correct location based on where the material was moved.