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x-cos-ax-1-x-2-dx-




Question Number 72445 by aliesam last updated on 28/Oct/19
∫((x cos(ax))/(1+x^2 )) dx
$$\int\frac{{x}\:{cos}\left({ax}\right)}{\mathrm{1}+{x}^{\mathrm{2}} }\:{dx} \\ $$

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