Sigma Notation and Series https://www.youtube.com/watch?v=-AhrR0jdBi0&t=274sConsider the sequence 10.20, 11.40, 12.10, 13.40 where each term represents the amount of money you earned as interest on your savings account for each of four years.The sum of the terms, 10.2 + 11.4 + 12.1 + 13.4, represents the total interest you earned in the four year period. Such a … [Read more...] about Sigma Notation and Series