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Putnam
1951 Putnam
A3
A3
Part of
1951 Putnam
Problems
(1)
Putnam 1951 A3
Source:
5/25/2022
Find the sum to infinity of the series:
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1 - \frac 14 + \frac 17 - \frac 1{10} + \cdots + \frac{(-1)^{n + 1}}{3n - 2} + \cdots.
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Putnam