Solution Set 4 is Posted

I have now posted solution set 4.

Now I'll get started on writing an informal specimen exam so you can get a better idea of what "bite-sized" questions might look like. (This is much less for the purpose of providing review material, as there is already plenty of that, and more just to get a more concrete idea of what an exam question --- as opposed to homework question --- might look like.) I don't yet know exactly when I'll have this ready. Also, I won't be writing up formal solutions for it the way I have done with the homework assignments.

Update (4/28/14): I have made a couple corrections and clarified some points on solution sheet 4 (especially on sheet 4) and have posted a revised version.