Thread: summation notation

Hi, I'm having trouble turning this summation notation into a function, any help would be greatly appreciated. Thank you.
(1/5)^k

Originally Posted by checkeredshawn

Hi, I'm having trouble turning this summation notation into a function, any help would be greatly appreciated. Thank you.
(1/5)^k

Hello,

what you describe is one value because the infinite geometric serie is convergent. The limes can be calcutated:

.
With your problem . Plug in these values:

.

EB