Page 1 Discriminant Notes CT 1 January 25, 2019Page 2 Discriminant Notes CT 2 January 25, 2019Page 3 Discriminant Notes CT 3 January 25, 2019 https://www.youtube.com/watch?v=z6hCu0EPso https://www.youtube.com/watch?v=z6hCu0EPs-o https://www.youtube.com/watch?v=z6hCu0EPs-o