Instruct: Classify a given Amazon review as either positive or negative.
Query: written by math professors for math professors

I am taking a differential equations course for the engineering program at Drexel University and I must say that this is one of the worst text books I have ever come across. I wonder what Boyce and Diprima were smoking as they were writting this book. First of all make sure you brush up on your greek before reading this book, there are more greek symbols in it then there are numbers or letters from the english alphabet. This book is so vague that you may as well consult a magic 8-ball for guidance. Basically, if you buy this book, prepare to fail. It skips so many steps its rediculous. My mind turns to mush every time I open it. For my homework in this course using this book, I just write the giberish my magic 8 ball tells me to. Even the TAs are lost in this book. Consider this a warning and not a rating. STAY AWAY!