18. Understanding Linear Algebra 2.3: The Geometry of Span

In this video, we develop a geometric understanding of span using vectors in R^2 and R^3. We explore how spans can form lines, planes, or all of space, and connect spanning sets to pivot positions in matrices. We also discuss what it means for vectors to span R^n and why at least n vectors are needed to span n-dimensional space. Based on Section 2.3 of Understanding Linear Algebra by David Austin.