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How to prove this equality:

[tex]N\,\overline{\gamma}\sum_{k=0}^{N-1}(-1)^k\frac{{N-1\choose k}}{(k+1)^2}=\,\overline{\gamma}\sum_{k=1}^N\frac{1}{k}[/tex]?

Thanks in advance

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# How to prove this equality

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