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relative approximation

См. также в других словарях:

  • approximation — [ aprɔksimasjɔ̃ ] n. f. • 1314 chir.; lat. médiév. approximatio, du bas lat. approximare « approcher » 1 ♦ (1740) Math. Calcul par lequel on approche d une grandeur réelle; détermination approchée. Méthodes par approximations dans le calcul d une …   Encyclopédie Universelle

  • Relative density — Relative density, sometimes called specific density, is the ratio of the density of a substance to the density of a given reference material. If a substance s relative density is less than one then it is less dense than the reference; if greater… …   Wikipedia

  • Relative difference — refers to an evaluation of a difference in measures in context with a base measure. It may be contrasted with an absolute difference.One approach to obtain the relative difference of two numbers is their absolute difference divided by the maximum …   Wikipedia

  • Approximation error — The approximation error in some data is the discrepancy between an exact value and some approximation to it. An approximation error can occur because the measurement of the data is not precise due to the instruments. (e.g., the accurate reading… …   Wikipedia

  • Relative change and difference — The relative difference, percent difference, relative percent difference, or percentage difference between two quantities is the difference between them, expressed as a comparison to the size of one or both of them. Such measures are unitless… …   Wikipedia

  • Approximation algorithm — In computer science and operations research, approximation algorithms are algorithms used to find approximate solutions to optimization problems. Approximation algorithms are often associated with NP hard problems; since it is unlikely that there …   Wikipedia

  • Relative permeability — In multiphase flow in porous media, relative permeability is a dimensionless measure of the effective permeability of each phase. It can be viewed as an adaptation of Darcy s law to multiphase flow. For two phase flow in porous media given steady …   Wikipedia

  • Boussinesq approximation (water waves) — In fluid dynamics, the Boussinesq approximation for water waves is an approximation valid for weakly non linear and fairly long waves. The approximation is named after Joseph Boussinesq, who first derived them in response to the observation by… …   Wikipedia

  • Erreur D'approximation — En analyse numérique, une branche des mathématiques, l erreur d approximation de certaines données est la différence entre une valeur exacte et une certaine valeur approchée ou approximation de celle ci. Une erreur d approximation peut se… …   Wikipédia en Français

  • Erreur d'approximation — En analyse numérique, une branche des mathématiques, l erreur d approximation de certaines données est la différence entre une valeur exacte et une certaine valeur approchée ou approximation de celle ci. Une erreur d approximation peut se… …   Wikipédia en Français

  • Vitesse relative — L expression vitesse relative est communément utilisée, pour exprimer la différence des vitesses de deux mobiles ou la variation dans le temps de la distance entre deux mobiles. Elle est aussi employée pour exprimer des variations comparées par… …   Wikipédia en Français

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