Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bad Book

This texbook was required for my Dynamics class, and I don't know why. To me, this book is absolutely terrible, and there were MANY typos and errors in presenting examples. Some of the problems even had INCORRECT solutions on the back of the book. I found at least 10 cases of this happening. When presented with this, I wrote to the publisher and they never even responded. What a terrible book with matching customer service on the publisher's part!