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find-0-dx-x-e-y-2-dy-




Question Number 31081 by abdo imad last updated on 02/Mar/18
find  ∫_0 ^∞ dx ∫_x ^(+∞)  e^(−y^2 dy)   .
$${find}\:\:\int_{\mathrm{0}} ^{\infty} {dx}\:\int_{{x}} ^{+\infty} \:{e}^{−{y}^{\mathrm{2}} {dy}} \:\:. \\ $$

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