The ratio test is a way of determining convergence or divergence based on the limit of the ratio of each term to the one before it. If this limit is less than 1, the series converges, and if it is greater than 1, it diverges.
The ratio test is a way of determining convergence or divergence based on the limit of the ratio of each term to the one before it. If this limit is less than 1, the series converges, and if it is greater than 1, it diverges.