Finite Mathematics - Covers transcendental functions, algebraic functions and the graphing of functions.
Mathematical Functions - Information on mathematical functions and formulas by Wolfram Research.
The Nautilus Spiral - A Sequence of Triangles - Studying the expanding sequence of isosceles right triangles utilizing recursive and explicit functions. With diagrams, explanations, and tables.
OJK's Precalculus Page - Covers functions, limits, trigonometric formulas, sequence and series. Also features online calculator, quizzes, and homework help.
Precalculus Problems and Solutions - Covers lines, functions, algebraic simplification, logarithms and exponents, and trigonometric equations. Includes practice exercises and answers.
Precalculus Resources - Topic-by-topic guide to web based resources for precalculus mathematics.