RESOURCES: Formula and Function

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Science  23 Jan 2004:
Vol. 303, Issue 5657, pp. 443
DOI: 10.1126/science.303.5657.443b

Need the formula for the modified Bessel function of the first kind or the equations for the Clebsch-Gordan coefficient? Forget those dog-eared handbooks and dig into this free storehouse of more than 87,000 formulas used by physicists, mathematicians, computer scientists, and engineers. The compilation from Wolfram Research of Champaign, Illinois, maker of the software package Mathematica, also features more than 10,000 graphs and animations of the functions. (, pedal curves using the square-root function.) You can download the formulas in formats that plug directly into Mathematica or other programs. The site currently lists only the bare equations, but co-creator Michael Trott says that his group plans to make the collection more welcoming by adding background information about their derivation and how they got their names.

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