This document discusses the application of calculus in business. It defines calculus and outlines the key topics of differential and integral calculus. It then provides examples of how calculus can be used in business contexts like measuring rates of change, revenue, profit, and slopes. Specific applications include identifying demand, consumer and producer surplus, and using integrals to calculate total profit from revenue. The presentation aims to explain the basic concepts of calculus and how both differential and integral calculus can be applied to solve practical business problems.