1.Exercises in this edition have been updated to better test and challenge students. Revisions are based on reviewer and user input, as well as the author's understanding of the course goals.
2.Chapter 6 now starts with a new section on the review of power series.
3.This edition contains an optional section on Green's functions in Chapter 4 and for those who have extra time in their course to consider this elegant application of variation of parameters in the solution of initial-value and boundary-value problems.
4.New projects have been added to the text to show how the concepts of Differential Equations will apply to students' intended careers.