Precalculus through Modeling and Visualization - http://wps.aw.com/aw_rockswold_precalculu_2/0,1853,52618-,00.html A complete online tutorial including chapter quiz and the use of TI graphing calculator.
College Algebra - http://www.okc.cc.ok.us/maustin/college_algebra.html Covers general concepts of polynomial, exponential and logarithmic functions;
Mathematical Functions - http://functions.wolfram.com/ Information on mathematical functions and formulas by Wolfram Research.
Precalculus Tutorial - http://jwbales.home.mindspring.com/precal/ Supplemental resources for students enrolled in a Precalculus Course, or a course in College Algebra and Trigonometry.
Exercises in Math Readiness: Functions - http://math.usask.ca/emr/menu_exp.html Contains exponential and logarithmic practice problems in three levels of difficulties.
The Nautilus Spiral - A Sequence of Triangles - http://www.theoldpro.net/ms/nautilusproblem Studying the expanding sequence of isosceles right triangles utilizing recursive and explicit functions. With diagrams, explanations, and tables.
Review of Precaculus Topics - http://www.npac.syr.edu/REU/reu94/williams/ch1/ch1_1intro.html Covers graphing, functions, trigonometry review, and absolute value.
Review of Limits and Continuity - http://www.npac.syr.edu/REU/reu94/williams/ch2/chap2.html An overview of trigonometric limits and Continuous Functions.
Trigonometry Contents - http://www.krellinst.org/UCES/archive/resources/trig/contents-node16.html Tutorial include basic concepts, functions, and exercises.
Precalculus Problems and Solutions - http://www.math.ucdavis.edu/~marx/precalculus.html Covers lines, functions, algebraic simplification, logarithms and exponents, and trigonometric equations. Includes practice exercises and answers.
Precalculus Resources - http://www.langara.bc.ca/mathstats/resource/onWeb/precalculus/ Topic-by-topic guide to web based resources for precalculus mathematics.
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