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Following problems of linear algebra are included in the manual: calculation of the third order determinants, calculation of the fourth order determinants by decomposition on elements of a line (column), calculation of a rank of a matrix, multiplication of matrixes, calculation of a return matrix, the solving of systems of the linear equations by Gaussa’ methods, Kramer's formula and in a matrix kind, and also a finding of own values of the linear operator. Calculation of all listed problems is made with Microsoft Excel programme.

The book is intended for students, teachers of the higher educational institutions, who study theoretical bases of mathematics and computer science.