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The textbook is divided into seven chapters, each of which consists of paragraphs. The paragraphs contain theoretical material. When studying it, pay special attention to the text printed in bold, bold italics and italics; this is how the book highlights definitions, rules and the most important mathematical statements.

The presentation of theoretical material is usually completed with examples of problem solving. These entries can be considered as one of the possible samples of the solution design.

For each chapter, there are problems for independent solution, which are recommended to be started only after mastering the theoretical material. The tasks include simple and medium difficulty exercises, as well as complex problems.

If you have free time after completing your homework and want to learn more, we recommend that you refer to the section "When the lessons are done". The material presented there is not easy. But it is all the more interesting to try your hand at it!