The book "Differential Equations with Private Derivatives" by Yegorov Yu. In. , Shubin M. A. and Komech A. and . is not just a textbook, but a real find for students, graduate students and anyone interested in mathematics and its applications in various fields of science and technology In this work, the authors masterfully combine theory and practice, offering readers a deep understanding of partial-derivative differential equations (PDEs), which play a key role in mathematical modeling. The book covers a wide range of topics, ranging from basics to more complex concepts, making it suitable for both beginners and those who already have experience in the field. The authors pay special attention to the intuitive understanding of concepts, which allows the reader not only to memorize formulas, but also to be aware of their physical meaning. This quality is especially valuable for technical students, engineers and researchers who need to put this knowledge into practice. One of the main topics raised in the book is the application of partial differential equations in various fields, such as physics, engineering, economics, and biology. Readers will be able to see how these equations help model real-world processes, such as heat propagation, fluid dynamics, or changing populations. This makes the material not only theoretically important, but also practically relevant, which will certainly attract the attention of those who are looking for the application of mathematics in real life. The style of the authors is clear and accessible. They use many examples and problems that help to consolidate the material and develop the skills to solve equations. The book also includes sections devoted to modern methods of numerical solution of DUP, which makes it relevant for those who are interested in computational mathematics. The authors are not afraid to delve into complex topics, but they do it in such a way that even the most difficult concepts become understandable. If you are looking for literature that will help you not only to master partial differential equations, but also to understand their significance in the modern world, this book will become your reliable assistant. It will be of interest to students of mathematical and technical specialties, graduate students, as well as teachers who are looking for quality materials for their courses. In the context of other well-known works in the field of mathematics, "Differential Equations with Private Derivatives" can be compared with the works of authors such as G. F. Daphne and W. F. Costumers who also explore complex mathematical concepts. However, the uniqueness of this book lies in its practical orientation and accessibility, which makes it an indispensable resource for anyone who wants to deepen their knowledge in this area. In conclusion, Differential Equations with Private Derivatives is not just a book, but a whole world of possibilities for those who seek to understand and use the powerful tools of mathematics. It inspires learning and opens doors to the world of science, where mathematics becomes an integral part of solving complex problems. If you want to expand your horizons and learn how to apply mathematics in various fields, this work should definitely take place on your bookshelf.