In the video descriptions for Linear Algebra Part 1 (Linear Algebra - Full College Course - YouTube) and Linear Algebra Part 2 (https://www.youtube.com/watch?v=DJ6YwBN7Ya8
),
there is a section that says this:
Three.IV.2 Matrix Multiplication, Part Two (We accidentally left this section out. Watch it here:
https://youtu.be/tOeh88b-fR0
That link leads to Three.IV.4 Matrix Inverse, Part Two , not Three.IV.2 Matrix Multiplication, Part Two . The correct link should be Three.IV.2 Matrix Multiplication, Part Two - YouTube