Instruct: Classify Amazon reviews into positive or negative sentiment
Query: For a rigorous physics class- helpful

Definitely helps with basic concepts and ideas. Presents ideas in step by step form. With problems from a physics for physics majors class, the book does not start at the literal ground level for every problem. It starts with some given numbers in class you would have to find. But this is to be expected. It does allow for a clearer understanding of the underling material.