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Question Number 33306 by abdo imad last updated on 14/Apr/18
find Σ_(n=1) ^∞ ln( 1+(1/n^2 )) .
$${find}\:\sum_{{n}=\mathrm{1}} ^{\infty} \:\:{ln}\left(\:\mathrm{1}+\frac{\mathrm{1}}{{n}^{\mathrm{2}} }\right)\:. \\ $$

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