Question Number 188470 by aleks041103 last updated on 01/Mar/23
$$\underset{\mathrm{0}} {\overset{\pi/\mathrm{4}} {\int}}{arctan}\left(\sqrt{\frac{\mathrm{1}−{tan}^{\mathrm{2}} {x}}{\mathrm{2}}}\right){dx}\:=\:? \\ $$
0-pi-4-arctan-1-tan-2-x-2-dx-