Simpson's rule

American  

noun

Mathematics.

1. a method for approximating the value of a definite integral by approximating, with parabolic arcs, the area under the curve defined by the integrand.

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Etymology

Origin of Simpson's rule

1895–1900; named after Thomas Simpson (1710–61), English mathematician

Example Sentences

These theorems may prove useful in preliminary calculations where the pressure-curve is nearly straight; but, in the absence of any observable law, the area of the pressure-curve must be read off by a planimeter, or calculated by Simpson's rule, as an indicator diagram.

From Project Gutenberg