Mathematics – History and Overview
Scientific paper
2005-04-08
Mathematics
History and Overview
8 pages; E808 in the Enestr\"om index
Scientific paper
This is a translation from the Latin of Euler's "Problema algebraicum de inveniendis quatuor numeris ex datis totidem productis uniuscuiusque horum numerorum in summas trium reliquorum", Opera Postuma 1 (1862), 282-287, reprinted in Leonhardi Euleri Opera omnia I.6. This paper is E808 in the E808 in the Enestr\"om index. We are given the four products $a=v(x+y+z), b=x(v+y+z), c=y(v+x+z), d=z(v+x+y)$. We want to determine $v,x,y,z$ from this data. Euler wants to do this symmetrically: instead of successively eliminating variables and finding out, say, z in terms of a,b,c and then finding y, and then finding x, and then finding v, Euler introduces a new variable that has the same relation with each of the unknowns v,x,y,z and works with that. Euler finds that there will be up to eight choices of v,x,y,z for each choice of a,b,c,d.
Bell Jordan
Euler Leonhard
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