Introduzione a i e ai Numeri Immaginari

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2wb/ Traduzione in Italiano del video Introduction to i and Imaginary Numbers http://www.youtube.com/watch?v=ysVcAYo7UPI http://www.khanacademy.org/video/introduction-to-i-and-imaginary-numbers?playlist=Algebra Help us caption & translate this video! http://amara.org/v/B2wb/