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find-1-1-x-x-dx-




Question Number 34279 by math khazana by abdo last updated on 03/May/18
find  ∫_1 ^(+∞)   (((−1)^([x]) )/x) dx .
$${find}\:\:\int_{\mathrm{1}} ^{+\infty} \:\:\frac{\left(−\mathrm{1}\right)^{\left[{x}\right]} }{{x}}\:{dx}\:. \\ $$

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