Sigma Notation: Geometric Series
View the Lesson | MATHguide homepage Updated June 22nd, 2023


Status: Waiting for your answers.





Problem: Determine the first three terms, final term, and the sum of this series.
 
  9 
 Σ(1/4)(-2)n - 1 =+++ ··· +=
  n=1  term 1 term 2 term 3 last term sum