Thread: Does the sum converge?

There are two different questions but I am hoping that if I get help with the first one, I will be able to do the second one on my own.

Find the sum of the series if it converges or show that it diverges

∑ n=0 to infinity of [2^(3n)-1] / [ 3^(2n)]

Do I do the nth term test and take the limit of it? I am not good at limits either.

Thanks!

Is this the series?

In any case, note that this is equivalent to:



by simple exponent rules. We can see this is a sum of two geometric series ( ) which of course converges.

thanks o_O. But wow, I definitely need to review my notes because that still doesn't make that much sense! I will work through what you gave me and with my notes to see if I understand it
Thanks again!