In this unit, we finish our study of differential equations. This includes a small section on second-order equations. The Briggs textbook includes an electronic-only chapter on these and we include it here. We will only be looking at the first two sections of that chapter (and, even then, only the aspects covered in the lecture videos).
We also begin to look at sequences and series. This part of the course starts with some very simple ideas and quickly builds into some very intricate concepts as we move into Taylor and other power series.