OpenStax, Contemporary Mathematics §3.11 Geometric Sequences · Example 3 · Algebra · Sequences & series

Geometric Sequences · Example 3

(a) What is the sum of the first 13 terms of the geometric sequence with first term $a_{1} = 5$ and common ratio $r = 3$ ?
(b) What is the sum of the first 7 terms of the geometric sequence with first term $a_{1} = 16$ and common ratio $r = \frac{1}{8}$ ?

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OpenStax, Contemporary Mathematics · §3.11 Geometric Sequences · Example 3

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