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method of variation of constants

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  • Method of variation of parameters — In mathematics, variation of parameters also known as variation of constants, is a general method to solve inhomogeneous linear ordinary differential equations. It was developed by the Italian French mathematician Joseph Louis Lagrange.For first… …   Wikipedia

  • Variation of parameters — In mathematics, variation of parameters, also known as variation of constants, is a general method to solve inhomogeneous linear ordinary differential equations. It was developed by Joseph Louis Lagrange[citation needed]. For first order… …   Wikipedia

  • Method of undetermined coefficients — In mathematics, the method of undetermined coefficients, also known as the lucky guess method, is an approach to finding a particular solution to certain inhomogeneous ordinary differential equations and recurrence relations. It is closely… …   Wikipedia

  • variation of parameters — a method for solving a differential equation by first solving a simpler equation and then generalizing this solution properly so as to satisfy the original equation by treating the arbitrary constants not as constants but as variables …   Useful english dictionary

  • Determination of equilibrium constants — Equilibrium constants are determined in order to quantify chemical equilibria. When an equilibrium constant is expressed as a concentration quotient, it is implied that the activity quotient is constant. In order for this assumption to be valid… …   Wikipedia

  • Stein's method — is a general method in probability theory to obtain bounds on the distance between two probability distributions with respect to a probability metric. It was introduced by Charles Stein, who first published it 1972,[1] to obtain a bound between… …   Wikipedia

  • parameters, variation of — ▪ mathematics       general method for finding a particular solution of a differential equation by replacing the constants in the solution of a related (homogeneous) equation by functions and determining these functions so that the original… …   Universalium

  • Multiphase particle-in-cell method — The multiphase particle in cell method (MP PIC) is a numerical method for modeling particle fluid and particle particle interactions in a computational fluid dynamics (CFD) calculation. The MP PIC method achieves greater stability than its… …   Wikipedia

  • Annihilator method — In mathematics, the annihilator method is a procedure used to find a particular solution to certain types of inhomogeneous ordinary differential equations. It is equivalent to the method of undetermined coefficients, and the two names are… …   Wikipedia

  • Perturbation theory (quantum mechanics) — In quantum mechanics, perturbation theory is a set of approximation schemes directly related to mathematical perturbation for describing a complicated quantum system in terms of a simpler one. The idea is to start with a simple system for which a …   Wikipedia

  • Chemical equilibrium — In a chemical reaction, chemical equilibrium is the state in which the concentrations of the reactants and products have not yet changed with time. It occurs only in reversible reactions, and not in irreversible reactions. Usually, this state… …   Wikipedia

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