Algebra/Chapter 15/Discrete Functions

------------------------ Algebra
Chapter 15: Sequences and Series
Section 1: Discrete Functions 		Operations of Arithmetic

15.1: Discrete Functions

A More Formal Understanding of Functions

As you know, a function assigns an input to exactly one output. We defined the set of inputs as the function's domain and the set of outputs as its range.

To describe a function f with a domain X and a codomain Y, we use the notation

Discrete Functions

Up to this point, we have studied what are called continuous functions, which took on certain values on any given interval.

Surjections, Injections, and Bijections

Inverses

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