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Mathematics 17 Online
OpenStudy (anonymous):

HOW do I evaluate this...?

OpenStudy (anonymous):

\[\sum_{n=1}^{10} 9(\frac{ 1 }{ 3 })^{n-1}\]

OpenStudy (anonymous):

\[ \sum_{n=0}^N x^n = \frac{1-x^{N+1}}{1-x}\]

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