The purpose of the book is to introduce the reader to the method of self-study. Once the material of the textbook is covered, the candidate of the third grade of high school should be able to answer review questions that refer to the entire material, in order to make a substantial review.

The topics of the book focus on specific points, where due to the large amount of material in the lesson, it is not possible to cover them extensively in school and tutoring. If there are difficulties in understanding the basic concepts of the lesson, the best way to overcome these difficulties is the graphical representation of functions.

Also, the answers to the proofs and the true-false questions of the first topic need to be fully understood by the candidate. The second topics are adapted to the format of modern second topics. The third topics are more extensive than those of the exams and some of their questions require a comprehensive understanding of the material. Finally, in all the fourth topics, a great effort has been made to cover almost the entire material of the lesson in one topic, as has been happening in the last decade.