1. The problem statement, all variables and given/known data http://i29.photobucket.com/albums/c252/lostsun/problem_statement.jpg" [Broken] Find a function to represent the series and then find f(?) that will represent its sum. 2. Relevant equations 3. The attempt at a solution I kind of understand how to come up with a function, but then how do I know what value to plug into the function to get the sum? Thank you for any help!