Find a General Term an for the Geometric Sequence $$8 , - 2 , \frac { 1 } { 2 } , - \frac { 1 } { 8 } , \frac { 1 } { 32 } \ldots$$

question 162

Multiple Choice

Find a general term an for the geometric sequence.
- $$8 , - 2 , \frac { 1 } { 2 } , - \frac { 1 } { 8 } , \frac { 1 } { 32 } \ldots$$

• A) \(a _ { n } = 8 \left( - \frac { 1 } { 4 } \right) ^ { n - 1 }\)
• B) \(a _ { n } = 6 \left( - \frac { 1 } { 6 } \right) ^ { n - 1 }\)
• C) \(a _ { n } = \frac { 1 } { 8 } ( - 4 ) ^{n - 1}\)
• D) \(a _ { n } = 8 \left( \frac { 1 } { 4 } \right) ^ { n - 1 }\)

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