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Wolfram: Mathematical Functions - http://functions.wolfram.com/
Includes advanced formulas and visualizations of various equation, such as elliptical curves. |
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Wikipedia: Mathematics Section - http://en.wikipedia.org/wiki/Mathematics
Free encyclopedia. Covers number systems, different math fields, foundations, history, applications, and famous problems. |
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On-Line Encyclopedia of Integer Sequences - http://www.research.att.com/~njas/sequences/
Identify a sequence by entering few terms in the sequence. Additional information includes examples, formulas, and related links. |
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Platonic Realms - http://www.mathacademy.com/pr/index.asp
Online resource for the mathematics community: links library, bookstore, quotes, and online articles. |
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Digital Library of Mathematical Functions - http://dlmf.nist.gov/
This mockup gives an idea of the current ideas about the design and organization of the new Digital Library; these ideas are, of course, subject to change. Content only is only available in a few places. |
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The Math Reference Project - http://www.mathreference.com/
An electronic archive of articles by Karl Dahlke on topics ranging from high school geometry up to graduate level topology. |
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EquationSheet.com - http://www.equationsheet.com/
Searchable directory, arranged by field, of equations, constants, symbols and SI units. Also features LaTEX utilities, software links. |
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Math2.Org - http://www.math2.org/
Formerly Dave's Math Tables. Mathematical tables on-line and downloadable. |
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Math Assistance - http://www.ercangurvit.com/
Lists rules and formulas for a number of mathematical subjects, such as plotting graphics, functions, factoring, derivatives, integrals, matrices, vectors, and numerical analysis. In English, French and Turkish languages. |
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Sin and Cos in Surds - http://www.jdawiseman.com/papers/easymath/surds_sin_cos.html
Sin and Cos expressed in square roots, simplified with rationalised denominators. |