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n-1-n-1-3-1-n-1-3-1-




Question Number 158528 by amin96 last updated on 05/Nov/21
Π_(n=1) ^∞ ((((n+1)^3 −1)/((n+1)^3 +1)))=?
$$\underset{\boldsymbol{\mathrm{n}}=\mathrm{1}} {\overset{\infty} {\prod}}\left(\frac{\left(\boldsymbol{\mathrm{n}}+\mathrm{1}\right)^{\mathrm{3}} −\mathrm{1}}{\left(\boldsymbol{\mathrm{n}}+\mathrm{1}\right)^{\mathrm{3}} +\mathrm{1}}\right)=? \\ $$

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