After taking preparatory classes at the Lycée Henri IV (Paris) in the PCSI-PC * stream, I joined the Ecole Normale Supérieure de Lyon. I teach Mathematics, Physics and Chemistry from the second to the first year of preparation. Out of habit, I first focus this tutoring on a perfect mastery of the course then on the resolution of "standard" exercises, classic allowing to re-use as well as possible the concepts approached in the course.