MATLAB mass matrix system, which occupies a leading position in the field of scientific and technical calculations, calculations and modeling The main attention is paid to the description of the basics of the application and programming language of the MATLAB base system, the implementation of numerical computational methods and the visually oriented design of the graphical user interface (GUI) . The latest versions of MATLAB 7. * (including implementations of R2006a, b and R2007a, b), features of their interface and their operators, functions and programming tools. Hundreds of examples of MATLAB application in educational, scientific, technical and mathematical calculations and calculations. The book is intended for students, teachers and postgraduates of universities and universities of various profiles, engineers and researchers .