Question Number 77608 by aliesam last updated on 08/Jan/20
$$\int\frac{\left(\:{ln}\mid{tan}\left(\frac{{nx}}{\mathrm{2}}+\frac{\pi}{\mathrm{4}}\right)\mid\:\right)^{\mathrm{2}} }{{x}^{\mathrm{2}} +\mathrm{1}}\:{dx}\:\:;{n}>\mathrm{0}\: \\ $$
ln-tan-nx-2-pi-4-2-x-2-1-dx-n-gt-0-