Larson's PRECALCULUS WITH LIMITS is known for delivering sound, consistently structured explanations and carefully written exercises of the mathematical concepts. With the Fourth Edition, the author continues to revolutionize the way you learn material by incorporating more real-world applications, on-going review and innovative technology. Stepped-out solution videos with instruction are available at CalcView.com for selected exercises throughout the text. The companion website LarsonPrecalculus.com offers free access to multiple tools and resources. CalcChat.com offers free step-by-step solutions to the odd-numbered exercises in the text. How Do You See It? exercises give you practice applying the concepts, and new Summarize features, and Checkpoint problems reinforce understanding of the skill sets to help you better prepare for tests.