The Ratio Test for Series
Calculus: The Ratio Test captures convergence of a series by taking the limit of ratios of consecutive terms. A proof is given, and we consider several examples. (a) sum n/2^n, (b) sum (-1)^n 1/n!, (c) general geometric series, (d) general p-series. For more videos like this one, please visit the Calculus playlists at this channel.