Question

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 ;;-;;))

Answer 1

Explanation:

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