An introduction to partial differential equations.
PDE playlist: http://www.youtube.com/view_play_list?p=F6061160B55B0203
Part 11 topics:
-- examples of solving initial value problems for wave equation using d'Alembert's formula
-- example 1 (0:27), example 2 (3:45), example 3 (6:03)
-- brief discussion of boundary conditions (11:23)
