Can anyone tell me how ? and also how to get this expression typed in LaTex to appear correctly? [tex] \sum_{n=1}^{\infty }\frac{(-1)^{n}}{n3^{n}}(2-5)^{n}=\sum_{n=1}^{\infty }\frac{1}{n}[/tex]
Last edited by Plato; Aug 25th 2009 at 06:58 AM. Reason: LaTex fix
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Originally Posted by tashbo Can anyone tell me how ? Note that
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