The book "Ordinary Differential Equations" by M. In. Fedoryuk is not just a textbook, but a real find for everyone who seeks to better understand the world of mathematics and its applications in various fields of science and technology. This publication will be an indispensable assistant for students, graduate students and teachers, as well as for anyone interested in mathematics and its practical aspects. In his book Fedoryuk invites the reader to plunge into the fascinating world of ordinary differential equations, starting with the basics and gradually moving to more complex topics. The author masterfully explains how these equations describe many phenomena in nature and technology - from mechanics to biology. Readers will be able to learn how differential equations can simulate the movement of bodies, processes in electrical circuits, and even population dynamics. The book covers a wide range of topics, including methods for solving linear and nonlinear differential equations, systems of equations, and the application of this knowledge in practice. Fedoryuk not only outlines the theory, but also offers many examples and tasks that will help the reader to consolidate the material and learn how to apply the knowledge gained. This makes the book not only a theoretical, but also a practical guide, which is especially important for students of technical specialties. Who is this book intended for? First of all, it will be useful for students of mathematical, physical-mathematical and engineering faculties . However, interest in it can be shown by wider circles of readers - from schoolchildren preparing for exams to professionals working in the field of research and development of technologies. If you are looking to improve your math skills or want to understand how differential equations affect the world around you, then this book will be an excellent choice for you. The topics raised in Ordinary Differential Equations cover not only mathematical aspects, but also philosophical issues related to understanding the nature and patterns that govern our world. Fedoryuk emphasizes that mathematics is not just a set of formulas, but a language with which we can describe and predict the phenomena that occur around us. This makes the book especially valuable for those who want not only to learn how to solve equations, but also to understand their meaning in the context of real life. The author's style is characterized by accessibility and clarity of presentation, which allows even complex concepts to be perceived easily and at ease. M. In. Fedoryuk is not only the author of this book, but also a recognized specialist in mathematics, known for his scientific works and teaching aids. His experience and passion for the subject make each page of the book fascinating and informative. If you are looking for literature in mathematics that combines theory and practice and also inspires further study, Ordinary Differential Equations M. In. Fedoryuk is exactly what you need. This book will be your reliable companion in the world of mathematics, opening up new horizons and opportunities for you. Do not miss the chance to immerse yourself in an exciting journey through the world of differential equations and discover their amazing power and beauty!