Chapter 3
Controlling Functions by Knowing Their Function
IN THIS CHAPTER
Determining whether a function is even or odd
Introducing parent functions and revealing how to graph them
Graphing rational functions and piecewise functions
Performing operations on functions and finding their domains and ranges
Working with the inverses of functions
By this point in your math studies, you’re familiar with the coordinate plane (it’s what you get when two number lines meet at a 90-degree angle). You know that the horizontal axis is called the x-axis and that the vertical one is called the y-axis. You also know that each point, or ordered pair, on the plane is named (x, y). But did you know that a set of ordered pairs is called a relation? The domain of the relation is the set of all the x values, and the range is the set of all the y values. For convenience, the domain variable always precedes the range variable in order and alphabetically in this book.
A function is a relation where every ...
Get Pre-Calculus Workbook For Dummies, 3rd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.