Find the Partial Sum $a _ { n } = \frac { ( - 1 ) ^ { n - 1 } } { 3 n }$

question 60

Multiple Choice

Find the partial sum.
-Find the sum of the first four terms of the sequence whose general term is $a _ { n } = \frac { ( - 1 ) ^ { n - 1 } } { 3 n }$ .

• A) \(- \frac { 7 } { 36 }\)
• B) \(\frac { 7 } { 36 }\)
• C) \(- \frac { 25 } { 36 }\)
• D) \(\frac { 25 } { 36 }\)

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Definitions:

Percentages

A mathematical concept used to express a number as a fraction of 100.

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Age Structure Diagrams

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