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find-A-n-0-x-2n-e-ax-2-dx-




Question Number 31067 by abdo imad last updated on 02/Mar/18
find A_n =∫_0 ^∞  x^(2n)  e^(−ax^2 ) dx.
$${find}\:{A}_{{n}} =\int_{\mathrm{0}} ^{\infty} \:{x}^{\mathrm{2}{n}} \:{e}^{−{ax}^{\mathrm{2}} } {dx}. \\ $$

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