Question

does the series converge of diverge if it converges what is the sum

Answer 1

\[\sum_{n-1}^{∞} -4(-1/2)^(n-1)\]

Answer 2

it is no clear
(n-1) is one exponent?

Answer 3

yes, it just doesn't want to stay up there

Answer 4

it beging in n=1?

Answer 5

Yes.

Answer 6

i got the sum but i want to be sure do u have the answer?

Answer 7

Well, it converges, but I am lost as far as finding the sum. That's the part that I specifically need help understanding.

Answer 8

yes it converges since |r|<1
i will try to draw what i done so far