Ch 1: Functions in Precalculus

About This Chapter

Review the basics of functions. This chapter uses video lessons and quizzes to incorporate all of the elements of function basics in a clear and concise manner.

Functions in Precalculus - Chapter Summary

Master the basics of precalculus functions with the engaging and easy-to-understand lessons in this chapter. These short video lessons go over the basic rules of functions in a way that makes the learning process fun and enjoyable. The lessons in this chapter cover:

  • The basics of functions
  • Function identification and notation
  • Inverse functions
  • Graphing basic and inverse functions
  • Polynomial functions

The lessons in this chapter contain definitions and examples of functions as well as practice questions and quizzes so you can assess your understanding and retention of the material. The concepts in each lessons are presented in a simple and visually engaging way to make sure you fully learn and understand the basics of functions. Self-assessment quizzes are available with each lesson to help you gauge your comprehension of the material, and you can take a chapter exam to close out your study of this topic.

6 Lessons in Chapter 1: Functions in Precalculus
Test your knowledge with a 30-question chapter practice test
What is a Function: Basics and Key Terms

1. What is a Function: Basics and Key Terms

Mapping numbers sounds complex, but we do it when we buy gasoline. We pump gasoline, and the gas station charges us based on the amount of gas that we pump. Learn how this relates to functions while reviewing the basics and notations in this lesson.

Functions: Identification, Notation & Practice Problems

2. Functions: Identification, Notation & Practice Problems

A function is simply a rule that takes one number and turns it into another. But some special conditions must apply for it to be a true mathematical function. Learn about those conditions and how we write functions here!

Inverse Functions

3. Inverse Functions

Inverse functions are two functions that do exactly opposite things. Check out this lesson to learn about how to write inverse functions, find inverse functions, and predict whether or not they exist.

Understanding and Graphing the Inverse Function

4. Understanding and Graphing the Inverse Function

If you use a function to map a to b, is there a way to go back from b to a again? Learn how to find and graph inverse functions so that you can turn a into b and back into a.

Graphing Basic Functions

5. Graphing Basic Functions

Graphs are just like maps - when you know the language! Review how locations have x and y coordinates similar to latitude and longitude, and how to plot points in the Cartesian plane.

Polynomial Functions: Properties and Factoring

6. Polynomial Functions: Properties and Factoring

Everything from projectile motion to trigonometric functions can be described by polynomials. Review factoring, polynomials and quadratic functions in this lesson.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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