Part 1

The purpose of this unit is to become familiar with rational functions. Specifically, in this unit you will learn:

  • To add, subtract, multiply, divide, and simplify rational expressions
  • To solve rational equations
  • To analyze the graphs of rational functions

Rational functions are seen in many areas of study such as science, engineering, business, and economics. They are as varied as the volume of a cardboard box, the fuel efficiency of a car, and the cost per meal served at a restaurant. An understanding of rational functions is therefore important not only for further study of mathematics, but for understanding the world in which we live.