V.B. Baiburin – Dr.Sc.(Phys.-Math.), Professor, Head of Department «Information security of automated systems», Yuri Gagarin State Technical University of Saratov

E-mail: baiburinvb@rambler.ru

A.S. Rozov – Ph.D.(Phys.-Math.), Assistant of Department «Information security of automated systems»,  Yuri Gagarin State Technical University of Saratov

E-mail: fog545@mail.ru

The article is devoted to the original method of setting the initial approximation for the numerical solving the Laplace equation. Assignment method is based on a simplified formula for the finite difference based on the three net nodes. It is shown, this approach allows one to reduce significantly the number of iterations during the numerical solution.

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