Write an Expression for the Nth Term of the Sequence $9 , - \frac { 9 } { 4 } , \frac { 9 } { 9 } , - \frac { 9 } { 16 } , \mathrm {~L}$

question 45

Multiple Choice

Write an expression for the nth term of the sequence. $9 , - \frac { 9 } { 4 } , \frac { 9 } { 9 } , - \frac { 9 } { 16 } , \mathrm {~L}$

• A) \(\frac { 9 - 1 ^ { n + 1 } } { n ^ { 2 } }\)
• B) \(\frac { 9 ( - 1 ) ^ { n } } { n ^ { 2 } }\)
• C) \(\frac { 9 ( - 1 ) ^ { n - 1 } } { n ^ { 2 } }\)
• D) \(\frac { - 1 ^ { n - 1 } } { 9 n ^ { 2 } }\)
• E) \(\frac { ( - 1 ) ^ { n } } { 9 n ^ { 2 } }\)

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