Main Article Content
The use of matrix algebra has expanded considerably in the last 25-30 years, in parallel with computer technology evolution. Introducing of matrix notation leads to simple and concise formulation of highly complex applications. In the first instance, a linear model can be developed or if the model is nonlinear, it can be linearized in first approximation, once or every step of a solving iterative process. In this paper, the authors will present two methods used to solve linear equations systems. First methods will be solved by manual calculation and the second method will be solved using a computer program, SISLIN, developed in Power Systems Department of the Politehnica University Timisoara. Methods are presented to students who are asked to apply the methods for case studies. Volume calculation is large, for which the authors analyze student’s concentration and attention degree.
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