explicit and recursive

Question

find the fifth term in the sequence that is defined as follows:

a_n=4+(-1)ⁿ

Answer 1

Hi Grace,

This problem is probably a lot easier than you think it is. The fifth term is found when n is equal to 5, so you literally just substitute 5 for n and then do the arithmetic.

For example, if you were trying to find the fifth term of the sequence a_n = 2(-1)ⁿ, the answer would be

a₅ = 2(-1)⁵ = 2(-1) = -2