Follows A Standard Course Curriculum Includes Both Polar Coordinates And Complex Numbers, Unlike The Competition Brilliant was just what it said As one reviewer has already noted there are errors in the main body of text and in the answers What amazes meis the 5 and 4 reviews have almost the exact same dates and are basically worthless comments NOT dealing with any substance in the book Makes me wonder if they are friends of the authors or paid reviewers Additionally the publisher s website does NOT contain an errata sheet even after four and one half years since publication. Great book highly recommend you buy