This book was required for my EML4313 Intermediate Engineering Analysis class. We started in CH 11. I soon realized that the first 10 chapters were a wonderful, concise review on all of the math proceeding this level (calc 1 - diff eq and linear algebra). It is clear and concise with short sections and great examples. I wish more books could be written like this. I have found a few vague definitions, but that is the only thing I can think of to improve this book.