Question

Please help! Find the following infinite sum, if it exists.
(LOOK AT RESPONSE) Thank you!

Answer 1

\[\sum_{n=1}^{\infty}2\left( -1/2 \right)^{n-1}\]

Answer 2

O.k. So how would I find the infinite sum?

Answer 3

i forgot sum upto infinity for geometric progression :(

Answer 4

i thinks its a/(1-r) where a is first term, r is the common ration.. so here a = 2/2= 1 and r = 1/2

Answer 5

sorry here a= 2

Answer 6

So it does not exist?

Answer 7

NO , it does not exist

Answer 8

Thank you imranmeah91!