Find a General Term an for the Geometric Sequence $$\frac { 1 } { 2 } , \frac { 5 } { 2 } , \frac { 25 } { 2 } , \ldots$$

question 102

Multiple Choice

Find a general term an for the geometric sequence.
- $$\frac { 1 } { 2 } , \frac { 5 } { 2 } , \frac { 25 } { 2 } , \ldots$$

• A) \(\mathrm { a } _ { \mathrm { n } } = \frac { 1 } { 2 } ( 5 ) ^ { \mathrm { n } - 1 }\)
• B) \(a _ { n } = \frac { 1 } { 2 } + 2 ( n - 1 )\)
• C) \(a _ { n } = \left( \frac { 1 } { 2 } \right) ^ { n - 1 } + 2\)
• D) \(a _ { n } = \frac { 1 } { 2 } + 5 ( n - 1 )\)

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