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An appraisal of Lalanne's nomogram

Published online by Cambridge University Press:  14 February 2019

P. Stanley
P. Stanley*
Affiliation:
7 Croft Road, Wilmslow, Cheshire SK9 6JJ
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Extract

A number of methods are available for the solution of cubic equations. Amongst these, and possibly less well known than those based on algebraic or trigonometrical procedures, is an elegant graphical solution devised by Lalanne [1]. His approach and the resulting nomogram are appraised in this paper.

The general cubic equation in the variable X

Type
Articles
Information
The Mathematical Gazette , Volume 103 , Issue 556 , March 2019 , pp. 47 - 51
Copyright
Copyright © Mathematical Association 2019 

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References

1. Gratton-Guinness, I., The Fontana history of mathematical sciences, Fontana Press (1997).Google Scholar
2. Nelson, D. (ed.), The Penguin dictionary of mathematics, (2nd edn.), Penguin Books (1998).Google Scholar