An Elementary Treatise on Algebra, to Which Are Added Exponential Equations and Logarithms: With Table of Errata (Classic Reprint)

Definitions and Notation. 1. A lgebra, according to the usual definition, is that branch of mathematics in which the quantities considered are represented by the letters of the alphabet, and the operations to be performed upon them are indicated hy signs. In this sense it would embrace almost the whole science of mathematics, elementary geometry alone being excepted. It is, consequently, subject in common use to some limitations, which will be more easily understood, when we are advanced in the science. 2. The sign -fis called plus or more, or the post live sign, and placed between two quantities denotes that they are to be added together. Thus 3-J- 5is 3plus or more 5, and denotes the sum of 3and 5. Likewise a -- bis the sum of a and b, or of the quantities which a and brepresent.
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