(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Finding the Radius of interval convergence of [tex]\sum[/tex] n=1(theres a infinity on the sigma), "x^n/2^n"

I really dont have a clue on which way I should go.

Just a hint would be great:)

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Radius and interval

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