OpenStax, Algebra and Trigonometry 2e §13.1 Sequences and Their Notations · Example 2 · Probability · Counting & chance

Find a formula for the general term (nth term) of a sequence.

ⓐ Find a general term for the sequence whose first five terms are shown below:
4, 8, 12, 16, 20...
ⓑ Find a general term for the sequence whose first five terms are shown below:
$\frac{1}{3}, \frac{1}{9}, \frac{1}{27}, \frac{1}{81}, \frac{1}{243}, ...$

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OpenStax, Algebra and Trigonometry 2e · §13.1 Sequences and Their Notations · Example 2

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