Question Number 87994 by abdomathmax last updated on 07/Apr/20
![vcalculate ∫_0 ^∞ ((arctan(2[x]+3))/(x^2 +9))dx](https://www.tinkutara.com/question/Q87994.png)
$${vcalculate}\:\int_{\mathrm{0}} ^{\infty} \:\:\frac{{arctan}\left(\mathrm{2}\left[{x}\right]+\mathrm{3}\right)}{{x}^{\mathrm{2}} \:+\mathrm{9}}{dx} \\ $$
vcalculate-0-arctan-2-x-3-x-2-9-dx-