basic series

[phyguy321]

1. The problem statement, all variables and given/known data
what is \sum i1/3 from i=1 to n


2. Relevant equations



3. The attempt at a solution
is there an expansion for this?

[gabbagabbahey]

As long as n is finite, the series will converge, but there is no closed form for this summation as terms get successively larger.

(unless the 'i' inside your sum is actually supposed to be \sqrt{-1} rather than an iterator)