For this sequence, write an explicit formula. Then determine the 15th term in the sequence. 1/2, 1, 3/2, 2 5/2, 3 7/2 ((help ;;-;;))

asked Mar 24, 2020 196k views

5 votes

For this sequence, write an explicit formula. Then determine the 15th term in the sequence.

1/2, 1, 3/2, 2 5/2, 3 7/2

((help ;;-;;))

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Answer:

Explanation:

$S = 1/2, 1, 3/2, 4, 5/2, 3, 7/2...\\a_n = (n)/(2)\\a_(15) = (15)/(2)$

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