Question Number 142504 by rs4089 last updated on 01/Jun/21
Answered by mnjuly1970 last updated on 01/Jun/21
$$\:\:\frac{\pi^{\mathrm{2}} }{\mathrm{12}}{ln}\left(\mathrm{2}\right)−\frac{\mathrm{5}}{\mathrm{16}}\:\zeta\:\left(\mathrm{3}\right)\:....\checkmark \\ $$