Covered today: We discussed, without getting too technical about it (yet), what we mean by
a contour inegral of a complex function. Then, we started to sort out the details. Namely, we learned
the definition of a contour (before that, we learned about arcs - simple arcs, simple closed arcs,
differentiable arcs, and smooth arcs), and we learned how to compute derivatives and integrals of
functions from a closed interval in R to C.
Remember not to show up to class on Friday.