World-class science popularizer Steven Strogatz offers an overview of the basic concepts of mathematical analysis and talks in detail about how they are used in modern life. The author abandons formulas, replacing them with simple graphs and illustrations. This book is not a dry, boring read that intimidates with complex theoretical reasoning and formulas. It's full of real-life examples that show why we all need math. An excellent alternative to standard textbooks. The book will be useful to anyone interested in the history of science and mathematics, as well as to those who want to understand why they need (and whether they need) mathematics. Published in Russian for the first time.