The book An Elementary Treatise On the Theory of Equations was written by author Todhunter, I. (Isaac), 1820-1884 Here you can read free online of An Elementary Treatise On the Theory of Equations book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is An Elementary Treatise On the Theory of Equations a good or bad book?
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267. SUMS OF THE POWERS OF THE ROOTS. 191 For ' \S'^ = a"' + r + c'"+... , ni + 2 Therefore SJ„^^, -S'^^, = a-b-(a-hy + a-G''{a-cy + hV{b-cy+. „ We will denote this by u^j so that .. =m. -. )-{-f(s)-*j(a"--}- Hence by proceeding as in Arts. 267 and 268 we may obtain the following results. (1) If all the roots are real -*"±-^ can be brought as near as we please to the product of the two numerically greatest roots by increasing m sufliciently. , (2) If there are real roots numerically greater tha...n the modulus of any imaginary root, there is a limiting value of ^, namely, the product of the two greatest of these roots. (3) If there be one or more moduli greater than the numori- cally greatest real root there is a limiting value of -'"—, namely, the square of the greatest of these moduli, that is, the product of the corresponding imaginary roots. (4) Thus the only case in which "''^^ can fail to have a limit u n is when there is one real root, and only one, numerically greater than the greatest modulus of the imaginary roots.
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