Question

Does series a(n)= (-1) raise to power n converge or diverge?

Answer 1

diverges as it just oscillates between -1 and 1

Answer 2

i.e. the partial sum oscilates between (depending on your inital n value) between either 0 and 1 or 0 and -1

Answer 3

Technically this is divergent, but we really should make up another name for this sort of thing.

Answer 4

i agree entirely with that

Answer 5

thnxx