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1. Maths
a. a numerical or constant factor in an algebraic term
b. the product of all the factors of a term excluding one or more specified variables
2. Physics a value that relates one physical quantity to another
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a numerical factor in a literal expression, a known multiplier of an unknown quantity of any degree, or a constant multiplier of a variable quantity. Thus, in the monomial −¾ a2b3 the coefficient is −¾; in the equation x2 + 2px + q = 0 the coefficient of x2 is 1 and the coefficient of x is 2p; and in the formula for the circumference of a circle l = 2πr the coefficient is 2π. In the equation for a straight line y = kx + b, the number k, which expresses the tangent of the angle that the line makes with the Ox axis, is known as the slope. Many of the coefficients in formulas expressing physical laws have special names, for example, the coefficient of friction and the coefficient of light absorption.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


A factor in a product.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The used multiplicative factors k are: 1, 1.5, and 2, which correspond to the lengths of 400, 600 and 800 mm, respectively.
This multiplicative factor was used because there was evidence that the population covered by PACE was substantially more expensive than the general Medicare population.
For the p(t) in Equation 1, the value of [[Alpha].sub.0] is 1.156-times the multiplicative factor applied to p(t) in forming s(t).
Their apparent dual use of the term "factor" obfuscates the fact that there is no necessary connection between (1) the additive (or multiplicative) effects observed at the level of correlations (or covariances) between trait-method pairings and (2) the additive or multiplicative factor models for observed scores on those pairings (1992, p.
Hence, the tth output changes the number of permutations generated by at most a multiplicative factor of N/B + t, which can be bounded trivially by N(1 + log N).
It has been added to the PIPDCG model as a multiplicative factor of 0.21.
where [T.sub.i] is an additional parameter representing the multiplicative factor for class-ij.

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