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Question Number 59276 by Mr X pcx last updated on 07/May/19
find the value of  Ī£_(n=2) ^āˆž   (n/((nāˆ’1)^3 (n+1)^3 ))
$${find}\:{the}\:{value}\:{of}\:\:\sum_{{n}=\mathrm{2}} ^{\infty} \:\:\frac{{n}}{\left({n}āˆ’\mathrm{1}\right)^{\mathrm{3}} \left({n}+\mathrm{1}\right)^{\mathrm{3}} } \\ $$

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