The Lectures Series on DVD featuring Chapter Test Prep Videos has been completely revised to provide students with extra help for each section of the textbook. All videos from the series are also available in MyMathLab. The videos include: *Section lectures with a new interface, which provides easy navigation to objectives and key examples and exercises. *Chapter Test Prep Videos, which offer step-by-step video solutions to every problem in each Chapter Test in the textbook. The Chapter Test Prep videos are also now available on YouTube(TM).