Mark
This website is specifically set up to facilitate discussion in our PDE course. You can ask and answer questions on homework here. I, as class instructor and forum moderator, will guide the discussion but not often answer questions directly. You can read more about how to participate by reading the What makes a good question post.
Note that participation in this forum is mandatory and will affect your grade. You can read precisely how the forum affects your grade in our question on Trust Levels.