The book "Some Applications of Differential Calculus of Functions of a Single Variable", written by a team of authors, is a fascinating and in-depth study devoted to one of the most important branches of mathematics - differential calculus. This work will be a real find for students, graduate students and teachers, as well as for anyone interested in mathematics and its applications in various fields of science and technology. The book focuses on the functions of a single variable and their derivatives, which play a key role in analyzing the behavior of these functions. The authors examine in detail the basic concepts of differential calculus, starting with basic concepts and ending with more complex topics. The reader will be able to learn about how derivatives help in solving practical problems, such as finding extremities of functions, analyzing the curvature of graphs and optimizing various processes. The book is not limited to theory; it is filled with many examples and tasks that allow the reader to better absorb the material and apply the knowledge gained in practice. This makes it an ideal tool for those who want to not only learn differential calculus, but also learn how to apply it in real-world situations, whether in economics, physics or engineering. The topics raised in the book cover a wide range of issues, such as function analysis, methods of finding derivatives, rules of differentiation, and the application of derivatives in various contexts. The authors focus on how differential calculus relates to other branches of mathematics and how it serves as the basis for more complex mathematical concepts. This connection makes the book especially valuable for those who seek a deep understanding of mathematics as a science. The book will be of interest not only to students and teachers, but also to anyone who wants to expand their knowledge in the field of mathematics. It is suitable for both beginners and more experienced readers who want to refresh their knowledge or delve into the study of differential calculus. Due to the available language and logical structure, the material is easily perceived and assimilated. The style of the authors is distinguished by clarity and consistency, which makes complex mathematical concepts more accessible to understanding. The book also includes many illustrations and graphs that help to visualize the topics discussed and make the learning process more fun. If you are looking for literature in mathematics that combines theory and practice, then "Some applications of differential calculus of functions of a single variable" will be an excellent choice. This book can be your reliable assistant in the study of differential calculus and its applications, as well as a source of inspiration for further study of mathematics. Do not miss the opportunity to immerse yourself in the world of differential calculus and discover its amazing possibilities. The book "Some Applications of Differential Calculus of Functions of One Variable" is not just a textbook, but a real guiding star for everyone who wants to master the art of analyzing functions and use it in their professional activities.