Find the third term of the sequence

Question

Find the third term of the sequence  , n = 1, 2, 3, …. (4 points)

Answer 1

Hello!

Problems like these are really just asking you to plug in a number for n. In this case, n=3 (because you're looking for the third term).

So when n=3, we get (-1)¹⁺³ * 3³/(2*3 +1) = (-1)⁴*27/7

= 27/7

and that's it!