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find-0-dx-x-2-1-x-2-3x-1-




Question Number 32479 by prof Abdo imad last updated on 25/Mar/18
find ∫_0 ^∞     (dx/((x^2 +1)(x^2  +3x +1)))
$${find}\:\int_{\mathrm{0}} ^{\infty} \:\:\:\:\frac{{dx}}{\left({x}^{\mathrm{2}} +\mathrm{1}\right)\left({x}^{\mathrm{2}} \:+\mathrm{3}{x}\:+\mathrm{1}\right)} \\ $$

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