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2016 UNCO Math Contest II Problems/Problem 7

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Problem

Evaluate $S =\sum_{n=2}^{\infty} \frac{4n}{(n^2-1)^2}$

Solution

See also

2016 UNCO Math Contest II (Problems • Answer Key • Resources)
Preceded by Problem 6	Followed by Problem 8
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10
All UNCO Math Contest Problems and Solutions

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