Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DO NOT PURCHASE

Tulane University math department makes us use this book for Linear Algebra. It was written by one of our professors here, Dr. Lawson.It contains about 1 in every 10 or 20 solutions to the problems. You will have no way of knowing if you're doing anything right. The explanations are sparse, poorly written, difficult to understand. Basically, the book is a hopeless mess, and let me tell you, the solutions manual doesn't help. Dr. Lawson himself doesn't even have all the solutions; if you ask him, all he gives you is the "Student Solutions Manual" which has 1 in every 5 answers. Oh, and the book has a huge amount of mistakes and typos, some of which are fixed by the solutions manual.Here at Tulane, math students know this book very well, and NOT A SINGLE STUDENT who has taken the class has ever NOT HATED this book.