The CLASSIC EDITION of Zill's respected book was designed for instructors who prefer not to emphasize technology, modeling, and applications, but instead want to focus on fundamental theory and techniques. Zill's CLASSIC EDITION, a reissue of the fifth edition, offers his excellent writing style, a flexible organization, an accessible level of presentation, and a wide variety of examples and exercises, all of which make it easy to teach from and easy for readers to understand and use.
I was reviewing this as something to pass the time. Made it about halfway through the book before becoming bored due to the content, not the presentation.
How to summarize this book? It's a collection of algorithms (with derivations) on how to solve a variety of differential equations. As such, it is very good. My problem with it is that after a while I got bored learning algorithms, when I could just look them up when needed. But it did provide me with a month's worth of entertainment as I scoured my mind for the memory of how to do various integrals and differentials needed to solve these problems.
I haven't finished it totally but I can say I finished 78% of it along with solving each and every problem Pointed. It is way magnificent. "For the allure of mathematics "