Mathematics Archives
Math Archives: Visual Calculus: Functions
Use this site to find the defintion of a function. The site offers a discussion on the vertical line test, symbolic, numerical and verbal discussions on the definition of a function.
Curated OER
Continuity
This visual calculus tutorial features a discussion of continuity with an interactive example.
Purple Math
Purplemath: Solving Inequalities: An Overview
A discussion on how to solve linear and nonlinear inequalities is presented. Both the Test Method and the Factor Method of checking positive/negative intervals are included as part of the discussion.