Discrete Mathematics/Functions and relations. This article examines the concepts of the function and the relation.
A relation is any association between elements of one set, called the domain or (less formally) the set of inputs, and another set, called the range or set of outputs. Some people mistakenly refer to the range as the codomain, but as we will see, that really means the set of all possible outputs—even values that the relation does not actually use. (Beware: some authors do not use the term codomain, and use the term range instead for this purpose. Those authors use the term image for what we are calling range.
So while it is a mistake to refer to the range or image as the codomain, it is not necessarily a mistake to refer to codomain as range.) FooPlot: Online graphing calculator and function plotter. Practice exercises, answers, solutions. Test your binary math skills with these practice problems and exercises.
Click the dropdown menus to see the answers. Examples are available on the other pages with step-by-step explanations if you need any clarification. The helpful hints and reminders are good to keep in mind, and should make the math much easier. Vector Math Tutorial for 3D Computer Graphics. Fourth Revision, July 2009 This is a tutorial on vector algebra and matrix algebra from the viewpoint of computer graphics.
It covers most vector and matrix topics needed to read college-level computer graphics text books. Most graphics texts cover these subjects in an appendix, but it is often too short.