Chapter 1: Relations and Functions
While the authors would like nothing more than to delve quickly and deeply into the sheer excitement that is Precalculus, experience has taught us that a brief refresher on some basic notions is welcome, if not completely necessary, at this stage. To that end, we present a brief summary of `set theory' and some of the associated vocabulary and notations we use in the text. Like all good Math books, we begin with a definition.
Adapted from Precalculus, 3rd corrected edition, by Carl Stitz and Jeff Zeager (stitz-zeager.com), licensed under CC BY-NC-SA 3.0. Changes were made: reformatted as an accessible XYZ web edition. License: CC-BY-NC-SA-3.0.