Formal Definition of Continuity Tutorial

Details examples on how to prove/disprove continuity at a point.
Example 1: Using FDOC from a graph: 2:20
Example 2: Using FDOC from a graph: 5:20
Example 3: Using FDOC to prove a piecewise function is continuous: 6:20
Example 4: Using FDOC to disprove a piecewise function is continuous: 9:10