Démonstration de la formule des miroirs

Demonstration of the mirror formula and the magnification formula Practice this topic directly on Khan Academy: https://fr.khanacademy.org/science/ph... About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning interface that empower learners to study at their own pace, whether at school or at home. We cover math, science, computer science, economics, and more. Our math courses support students from kindergarten through college with advanced, adaptive technology that identifies each student's learning gaps and strengths. Free. For everyone. Forever. #YouCanLearnAnything Subscribe to the Khan Academy French channel:    / @khanacademyfrancais   Find thousands of other 100% free videos and interactive exercises at http://fr.khanacademy.org Video licensed under CC-BY-SA.