Find the indicated term of the sequence. $a _ { n } = ( - 1 ) ^ { n } ( 4 n - 2 )$ $a _ { 27 } =$ ?
A)102
B)-106
C)-110
D)6
E)-104

Name: Find the indicated term of the sequence. $a _ { n } = ( - 1 ) ^ { n } ( 4 n - 2 )$ $a _ { 27 } =$ ? A)102 B)-106 C)-110 D)6 E)-104
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Question

Quizplus · Accepted Answer

To find the 27th term, $a_{27}$, substitute $n = 27$ into the formula: $a_{n} = (-1)^{n}(4n - 2)$. This gives $a_{27} = (-1)^{27}(4(27) - 2) = -1 \times (108 - 2) = -106$.

Find the Indicated Term of the Sequence an=(−1)n(4n−2)a _ { n } = ( - 1 ) ^ { n } ( 4 n - 2 )an​=(−1)n(4n−2)

Find the Indicated Term of the Sequence $a _ { n } = ( - 1 ) ^ { n } ( 4 n - 2 )$