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find-n-1-1-x-2-n-2-pi-2-




Question Number 29839 by abdo imad last updated on 12/Feb/18
find Π_(n=1) ^∞  (1−(x^2 /(n^2 π^2 ))).
$${find}\:\prod_{{n}=\mathrm{1}} ^{\infty} \:\left(\mathrm{1}−\frac{{x}^{\mathrm{2}} }{{n}^{\mathrm{2}} \pi^{\mathrm{2}} }\right). \\ $$

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