This book is aimed at students in the second year of high school in the orientation group of Positive Sciences. It contains:

• Detailed theory.
• Observations on the theory, which support the answers to the questions and the solutions to the exercises.
• Methodology and Comments for solving exercises.
• Solved exercises, as examples of how to solve them.
• Exercises for solving.
• Topics that cover the entire spectrum of knowledge that the student must have, in order to fully meet the exam requirements.
• Tests for each teaching unit.
• At the end of the book, there are the solutions to the exercises in this book.