Question

Given the sequence {a sub n) from n=1 to infinity is
{-3, 2, -4/3, 8/9, -16/27,....} find a sub n, the nth term of the seq. and use it to find the 15th term.

Answer 1

PLEASE HELP!!!!

Answer 2

it would be easy if it didn't have that first term, -3

Answer 3

maybe -3 is simplified and it can be written as smthng else

Answer 4

wat did u get without the -3 for an a sub n

Answer 5

{2, -4/3, 8/9, -16/27} would be ((-1)^(n-1)*2^n)/3^n

Answer 6

ok while i think about this can u help me with a poroblem on monotonicity... i will repost this question later 2 see if others can help

Answer 7

i have 2 questions on monotonicity

Answer 8

can u help?? ill post it here