Worldwide Single-Variable Calculus is the combination of Worldwide Differential and Worldwide Integral Calculus. Written by David B. Massey, Ph.D., an award-winning teacher and world-renowned research mathematician, has been teaching college students for 30 years. He emphasizes intuitive ideas in conjunction with rigorous statements of theorems, and provides a large number of illustrative examples. In the accompanying videos, Dr. Massey lectures on the core material from each section.