Ordinary Differential Equations through Dimensional Analysis

José Antonio Belinchón

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Ordinary Differential Equations through Dimensional Analysis

José Antonio Belinchón

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Abstract

In in this paper we show how using D.A. it is found a simple change of variables (c.v.) that brings us to obtain differential equations simpler than the original one. In a pedagogical way (at least we try to do that) and in order to make see that each c.v. corresponds to an invariant solution (induced by a symmetry) or a particular solution, we compare (with all the tedious details, i.e. calculations) the proposed method with the Lie method. The method is checked even in ODEs that do not admit symmetries.

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José Antonio Belinchón. 2005-02-28. Ordinary Differential Equations through Dimensional Analysis. https://arxiv.org/abs/physics/0502154

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