This book is intended for students of the 2nd grade of High School. It contains: 

• Detailed theory. 
• Observations on the theory, on which the answers to the questions and the solutions to the exercises are based. 
• Methodology and Comments for solving exercises. 
• Solved exercises, as examples of solution methods. 
• Exercises for solving. 
• Tests for each teaching unit. 
• Topics and Tests that cover the entire range of knowledge that the student must have, in order to fully meet the requirements of the exams. 

At the end of the book there are: 

• The solutions to the exercises for solving in this book.
• The topics and solutions of the topics in the Panhellenic exams.