Differential Equations (Structural Theory). Educational manual

The purpose of this textbook is to present the basic principles and methods of finding exact analytical solutions to various differential equations (ordinary and partial), as well as to study the modern trends in the development of this field of knowledge.
The textbook is intended for students studying in the field of 'Applied Mathematics and Physics' and other fields and specialties in the natural and mathematical sciences, engineering, and technology. The textbook can also be useful for graduate students and teachers and can be used in the study of disciplines related to solving differential equations in various branches of applied science. It will also be helpful in preparing for seminars, optional classes, and for self-study on topics related to this subject. The material of the textbook can be widely used in lectures and practical classes on courses in differential equations of mathematical physics and group analysis.
Approved by the Educational Methodological Association in the field of 'Pedagogical Education' of the Ministry of Education and Science of the Russian Federation as a textbook for universities preparing students in the field of 'Pedagogical Education'.
3rd edition, stereotyped.