Question Number 182170 by mathlove last updated on 05/Dec/22
Answered by SEKRET last updated on 05/Dec/22
$$\:\:\frac{\boldsymbol{\pi}^{\mathrm{2}} }{\mathrm{12}} \\ $$$$ \\ $$
Commented by SEKRET last updated on 05/Dec/22
$$ \\ $$
Commented by SEKRET last updated on 05/Dec/22
Commented by mathlove last updated on 05/Dec/22
$${thanks}\:\boldsymbol{{a}}\:\boldsymbol{{lot}} \\ $$
Commented by SEKRET last updated on 05/Dec/22
$$\boldsymbol{\mathrm{not}}\:\:\boldsymbol{\mathrm{at}}\:\boldsymbol{\mathrm{all}} \\ $$