Brightstorm is like having a personal tutor for every subject
See what all the buzz is aboutCheck it out
Geometric Series - Problem 13 145 views
In order to find a finite sum of a geometric sequence, (that is, a list of numbers where there is a common "multiply by number," or r), you will need three pieces of information: the first term, the ratio, and how many terms are being added. From there, plug those values into the formula for a geometric series and evaluate, being especially careful with the order of operations. Simplify what is inside the parentheses, then do the exponent, and then multiply by the term out front.
Transcript Coming Soon!