The manual was developed in accordance with the curriculum for the subject "Mathematics" for grades 10-11 of general secondary education institutions (basic level). Contains theoretical material, examples of solving typical problems, setting three difficulty levels for all training topics of the program. Its use in the classroom allows you to implement a differentiated approach to learning, and also provides the opportunity to independently study mathematics. A separate chapter presents professionally oriented tasks in the specialties of the Computer Engineering direction, which is significant for the formation of professional competence of future specialists.