Abstract
P.S.—I thank Mr. C. F. Merchant for pointing out in NATURE of June 3 that the four-ordinate rule is already in use, and for giving a reference to Tchebycheff's rules, with which I was unacquainted. The positions of Tchebycheff's ordinates, as in (a) and (b)above, are inconvenient, and the rules obtained by taking neighbouring ordinates attain simplicity with-out great loss of accuracy.
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D., A. The Approximate Evaluation of Definite Integrals between Finite Limits. Nature 105, 456 (1920). https://doi.org/10.1038/105456a0
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DOI: https://doi.org/10.1038/105456a0
