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Title: Métodos semi-analíticos perturbativos para trajetória de projéteis
Keywords: Computação;  Teoria das perturbações;  Métodos numéricos;  Aproximações;  Análise de sensibilidade;  Computer sciece;  Theory of the disturbances;  Numerical methods;  Approaches;  Analysis of sensitivity
Abstract: In this work, perturbation methods are used as a tool to help numerical and sensi-tivity analysis. A low cost process to estimate the effect of small changes in the set of parameters of a differential equation, each time a parameter is changed, is sought. Thus, the application of a numerical method to recompute the problem could be avoided or, in the case it is employed, the solution would be improved. An introduction to perturbation theory is presented and the methodology proposed is discussed and employed on the study of projectile trajectories, an example of coupled, non-linear system which can benefit from this approach.
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