...Calc 3: a mix of topics that's different at different schools, but always includes series. You already can guess the sum 1 + 1/2 + 1/4 + 1/8 + 1/16 + ... where each term is half of the previous one. This course teaches you how to find the sum of other series, like 1 - 1/2 + 1/3 - 1/4 + 1/5 - 1/... (read more)