Question Number 45975 by maxmathsup by imad last updated on 19/Oct/18
$${calculate}\:\int_{\mathrm{0}} ^{\infty} \:\frac{{arctan}\left(\mathrm{1}+{t}^{\mathrm{2}} \right)}{\mathrm{1}+{t}^{\mathrm{2}} }{dt} \\ $$
calculate-0-arctan-1-t-2-1-t-2-dt-