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Back to 13.4 Series and Their Notations

Finding the First n Terms of a Geometric Series

Avg difficulty 2.5

Use the formula to find the indicated partial sum of each geometric series.

  1. ⓐ S 11 S_{11} for the series 8 + -4 + 2 + … \text{8}\textrm{ }+\textrm{ }-\text{4}\textrm{ }+\textrm{ }\text{2}\textrm{ }+\textrm{ } \ldots
  2. ⓑ ∑ ​ k=1 6 3⋅ 2 k \sum^{​}_{k = 1}^{6} 3 \cdot 2^{k}

OpenStax Algebra and Trigonometry 2e, 13.4 Series and Their Notations, exercise 16

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.