Question Number 130626 by Lordose last updated on 27/Jan/21
$$\int_{\mathrm{0}} ^{\:\infty} \frac{\mathrm{x}^{\mathrm{4}} \mathrm{tan}^{−\mathrm{1}} \left(\mathrm{x}\right)}{\mathrm{1}+\mathrm{x}^{\mathrm{6}} }\mathrm{dx} \\ $$
0-x-4-tan-1-x-1-x-6-dx-