Sequenze e serie (parte 2)

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2vN/ Traduzione in Italiano del video Sequences and series (part 2) http://www.youtube.com/watch?feature=player_embedded&v=U_8GRLJplZg http://www.khanacademy.org/math/precalculus/v/sequences-and-series--part-2 Help us caption & translate this video! http://amara.org/v/B2vN/