Note Set 10a: Becoming a Reduced Row Echelon Form Whisperer
A very solid start on understanding the four basic kinds of the Reduced Row Echelon Form of A, RA. We gather the rank of A, whether solutions to A→x=→b are possible or not depending on b, and if so, whether there will be one or infinitely many. Yes, it's that exciting. Later we add RTA to complete the Big Picture story (gloriousness).
Best consumed by 2016/10/03