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OpenStudy (xkehaulanix):
I've almost got this problem down, but I got stuck at a summation step. Somebody mind explaining how to get between these steps?
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OpenStudy (xkehaulanix):
\[n*\sum_{i=0}^{n-1}i/(n-i)^2 = n*\sum_{i=1}^{n}(n-i)/i^2\]
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