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peripatein
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Homework Statement
I am trying to represent the function 2x/(1+x2) as a series and determine its radius of convergence.
Homework Equations
The Attempt at a Solution
Using the series for ln(1-x) I have come up with the following series:
Ʃ(n=1,infinity) [2*(-1)n*x2n-1], with radius of convergence 1 (for 0<x<1).
Could someone please confirm that this is indeed the correct answer?