Wonderful mix of history and mathematics. Works a detailed example of Descartes' method for finding the slope of tangents. Then does Fermat's. Which sets the scene for Descartes' challenge x^3 + y^3 - 3xy = 0. Will Fermat solve it? Worth the 47 minutes to watch all the way to the dramatic denouement.
Monica 1 points 1.3 years ago
oh.