find the radius and interval of convergence of:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\sum_{n=1}^\infty\frac{(-1)^{(n+1)}nx^n}{2^n}[/tex]

the radius is [tex]x<2[/tex]

and the interval is [-2,2)

are these two answers correct?

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# I need some peer review of this problem

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