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find-n-2-1-n-4-1-




Question Number 79097 by mathmax by abdo last updated on 22/Jan/20
find Σ_(n=2) ^∞   (1/(n^4 −1))
$${find}\:\sum_{{n}=\mathrm{2}} ^{\infty} \:\:\frac{\mathrm{1}}{{n}^{\mathrm{4}} −\mathrm{1}} \\ $$

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