Article title: THE USAGE OF DERIVATIVES FOR ECONOMIC OBJECTIVES

Author: Anfinogentova Mariia Denisovna

Annotation:
The article provides examples of the usage of derivatives for solving economic tasks. This method offers to do some economic calculations more effectively, and it also shows the necessity of joint use of Math and Economics to improve the production process.

Email: mar.anfinogentova@yandex.ru

Article title: APPLICATION OF MATHEMATICAL METHODS IN THE STUDY OF ECONOMIC MODELS

Author: Dakasheva Tanzila Muhtarovna

Annotation:
This article discusses the ways of applying mathematical methods in the study of economic processes. The economic meaning of such a mathematical category as a derivative is considered, its meaning and ways of application in solving economic problems are studied. Several economic models are used as examples.

Email: tanz.w95@gmail.com

Article title: TOTAL LEAST SQUARES FOR ESTIMATION OF THE GROSS OUTPUT VECTOR

Annotation:
The article proposes the estimation of the gross output vector in the presence of errors in the matrix of direct costs and the final consumption vector. The article suggests the use of the total least squares method for estimating the gross output vector. Test cases showed that the accuracy of the proposed estimates of the gross output vector is higher than the accuracy of the estimates obtained using the classical least squares method (OLS).

Email: dvi85@list.ru

Article title: APPLICATION OF THE INTEGRAL FOR THE TASKS OF ANALYTICAL AND PROGNOTIC CHARACTER IN THE ECONOMY

Author: Makarov Sergey Ivanovich, Kurganova Maria Vladimirovna

Annotation:
The relevance of the topic of this work is determined by the fact that the use of integrals allows us to solve a large number of economic problems. The development and use of economic and mathematical models indicate the ways of improving economic information oriented to solving a particular system of planning and management problems.

Email: matmaksi@yandex.ru, kurganovamv@bk.ru

Article title: CYCLING WHEN SOLVING LINEAR PROGRAMMING PROBLEMS

Author: Nemudrova Alyona Aleksandrovna

Annotation:
Currently, there is a strong push in the field of scientific and technological progress in our country, which is closely related to the use of various mathematical methods and computer technology. Special attention should be paid to their use in solving any economic and engineering problems. They, in turn, are used in many areas of the company's activities, for example, when solving certain problems of planning and managing production processes, and long-term planning. In this regard, it is important for students of various fields of higher education to know and understand the application of mathematical methods and the problems that arise.

Email: nemudrovaaa@yandex.ru

Article title: APPLICATION OF THE APPARATUS OF DIFFERENTIAL EQUATIONS IN MODELING OF ECONOMIC PROCESSES

Author: Nyikina Elena Yuryevna

Annotation:
The aim of this work is to consider some of the techniques of basic mathematical modeling of economic and social processes. The application of the apparatus of differential equations makes it possible to find an approach to solving many economic problems. The author indicates that the considered method of mathematical modeling gives a somewhat simplified approach to the compilation of an economicmathematical model. But at the same time, it is noted that there are many mathematical techniques that allow us to solve more complex problems with multi-purpose problems.

Email: nuikina1973@mail.ru

Article title: PROBLEM S5 FOR THE THIRD-ORDER HYPERBOLIC EGUATION IN A THREE-DIMENSIONAL SPACE

Author: Rodionova Irina Nikolaevna, Sevastyanova Svetlana Alexandrovna

Annotation:
The article presents a method for solving the boundary value for the complete equation of the thirdorder hyperbolic type with variable coefficients. The solution to the problem posed is based on the solution of the Darboux problem in a special class of functions obtained by the authors. The problem is reduced to a set of uniquely solvable Volterra integral equations, by virtue of which its solution can be obtained in explicit form.

Email: s_sevastyanova@mail.ru