Section 2.4 Functions and graphs

A function is a special type of relation between sets

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: type of relation between sets. We denote a function from X to Y by f : X → Y , where f is the name of the function. The set X is called the domain of f . We call Y the target set of f . We write y = f (x ) for the assignment of x ∈ X to y ∈ Y The element y = f (x ) is called the function value at x . The set {f (x ) | x ∈ X } is called the range of f . Outline Functions Representing Functions The Domain and Range Evaluating Functions Average Rate of Change Examples Example 1 Let X be students in Math 1050, and let Y be the chairs in the classroom. If f assigns each student x in X to the chair y ∈ Y he/she is sitting on, then f is a function from X to Y . 2 f (x ) = 5 is the function that assigns each real number x to the number 5. What is its domain a...
View Full Document

This note was uploaded on 02/10/2014 for the course MATH 1050 taught by Professor K.jplatt during the Spring '14 term at Snow College.

Ask a homework question - tutors are online