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On Integration by means of Selected Values of the Function

Published online by Cambridge University Press:  18 August 2016

W. S. B. Woolhouse
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Extract

Mr. G. F. Hardy has contributed a valuable paper on this subject (J.I.A., xxiv, p. 95) and (p. 103) has done good service by introducing a theorem by Gauss for the accurate integration of algebraic functions limited to any stated degree, and by showing how the same may be applied to the approximate integration of other functions. Again, Mr. George King (J.I.A., p. 276) has made good use of one of the best of Mr, Hardy's formulas in his Numerical Calculation of the Values of Complex Benefits, practically elucidating the important advantages gained by its adoption. I have read these papers with much interest and have thereby been induced to investigate the matter still further, from my own point of view, in its especial relation to assurance calculations, and with results that may be considered worthy of communication.

Type
Research Article
Information
Journal of the Institute of Actuaries , Volume 27 , Issue 2 , April 1888 , pp. 122 - 155
Copyright
Copyright © Institute and Faculty of Actuaries 1889

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References

page 145 note * The combination 5 (5, 4, 2, 0), entered first in this table, disclosed such a surprisingly high and persistent approximation, that to ray mind it seemed to be like the discovery of a nugget, and I have been prompted to name it accordingly. It is also a combination the distribution of which is easy to remember as involving thefirstand last, together with the odd functions, namely,u0u,1u,3,u5,s ,u7,u9,u10.The combination 14 (14,12, 7, 0) is a second nugget, and that of 11 (10, 6, 0) in the former table is also remarkably approximative.