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Discrete Mathematics and Its Applications 4th Edition
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Top Customer Reviews
The "but..." is that this book, like almost every math text that I have ever come across, is NOT very readable and gets EXTREMELY boring at parts. I would say that math books can only be so interesting, but I have come across one math text that I honestly enjoyed from beginning to end: "Linear Algebra and Its Applications," by Lay. That book is proof that it can be done, but this book sure isn't.
Also, one last word of advise... I found that the student solutions guide that was written for this text is a must have. It has the worked out solutions to many of the books problems, which is a big help considering that Discrete Math is all about how you found the answer.
This book is not very good. Here's why: It does not explain Big-0, Big-Omega, Big Theta and other important topics. The author gives the formal definition, but does NOT provide any worked out solutions from which you can follow and learn. In the back of each section where all the problems are listed, the author introduces NEW material that is VERY important to know. So you have to play "detective" with this book and take a "forensic" approach if you want to learn anything. The book tells you to look a few sections ahead to find a definition that will allow you to solve a problem in the current section. The author uses MANY run-on sentences in the book when trying to explain important concepts. Some sections are good though. The sections on logic and sets are good because they actually HAVE worked out problems that are systematic and don't skip steps.
Why can't you just pick up a book, read it and learn? If that's what you want to do, this book's not for you. If you want to spend hours and hours in the library reading over and over but not learning much, then I suggest you buy this book.
If you are the type of person who learns best by reading a textbook and doing the exercises, don't waste your money on this book because the section on the "Growth of Functions" has NOT ONE example of how to prove if f(x) is O( g(x) ), or if f(x) is big-Omega( g(x) ), or if f(x) is big-Theta( g(x) ), for example. The book has all the formal definitions written down for you, but no problems are worked out algebraically. It does not point out the common pitfalls or anything like that either.
Be warned though -- the first two or three chapters are kind of dry and difficult. Rosen explains things, but he doesn't spoon feed you. There's quite a bit of vocabulary and new ideas to digest; mathematical induction is just plain hard to understand in the beginning and it takes quite a while (and a lot of practice) to learn to construct well-formed proofs. Do yourself a favor and spend the extra money on the solution manual. What you don't understand just by reading the text is usually, though not always, made much clearer by working through the problems while reviewing the answers with the solution process laid out for you. WORK A LOT OF PROBLEMS. You will never really understand the concepts or retain the information without spending hours wrestling with this stuff. This isn't Art Appreciation 101 or Intro to Government. You're not going to grasp everything just by attending class and (maybe) reading the book. You've got to do some real analytical processing and wear out some erasers.Read more ›
Most Recent Customer Reviews
This book was very helpful, and my son got an A in the class...need I say more?! Thanks!Published 20 months ago by becki
This was my text book for introduction to computer science and as a student I found it very clear and stimulating. Read morePublished on January 8, 2014 by frank41
This was a decent book, it was cheap in comparison to the 6th edition, not bad condition.
No complaints, the book I received was used as promised.
Fast customer service. Good delivery time and nice condition of the book. One slight minus - I ordered the book as a "new", but it ended up been used already (a bit of... Read morePublished on June 12, 2013 by V. Gar.
This book had everything I needed to tackle the subject except it couldn't fix my professor's thick accent. Read morePublished on March 15, 2013 by Laura SN
My professor actually did not use the book since the new edition was to pricey for students and said we could purchase this one. Read morePublished on January 26, 2012 by D.A
The key to learning math is to have a resource at your finger tips that explains concepts and ideas that are easily understood. Kenneth H. Read morePublished on April 16, 2011 by KEEP LEARNING SIMPLE