Projections and Idempotent Matrices

In this video, we introduce the notion of projections and idempotent matrices. Linear Algebra Done Openly is an open source linear algebra textbook developed by Dr. Andrew Misseldine. It is supported and improved by student contributions done by Math 2700 students at Southern Utah University, since Fall 2018. The textbook can be found at: https://drive.google.com/open?id=1KQ7dbLXI4x39VwZovTL0DKRsZwt_i3Vt&authuser=andrewmisseldine@suu.edu&usp=drive_fs This lecture covers section 4.3 - Outer Products from the book. This is part 2 of 4 videos from this section.