## Reference Topics 11-4

A primer of summation notation can be found at this site:

https://www.math.ucdavis.edu/~kouba/CalcTwoDIRECTORY/summationdirectory/Summation.html

Here is a practice site working with arithmetic and geometric series:

http://mathforum.org/sum95/math_and/spreadsheets/examples/series.html… See the whole entry