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Representing a Sum of a Series as a Function

  • Thread starter color_me
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  • #1
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Homework Statement


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.

Homework Equations





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!
 
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Answers and Replies

  • #2
zcd
200
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it should help to know that [tex]\tan{x}=\sum_{n=0}^{\infty}(-1)^{n}\frac{x^{2n+1}}{2n+1}[/tex]
 

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