... cafe, it muft have been greater than each of an odd number of the pofitive roots. An odd number of the pofitive roots, therefore, muft lie between them when they give refults with oppofite figns. The fame obfervation is to be extended to the fubftitution...
Elements of Algebra for the Use of Students in Universities: To which is ... - Page 207
by William Trail - 1796 - 311 pages
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