Question Number 84987 by Jidda28 last updated on 18/Mar/20
$$\boldsymbol{{I}}{negrate} \\ $$$$\int_{\mathrm{0}} ^{\mathrm{4}} \left(\varrho^{{t}} \boldsymbol{{B}}_{{n}} \mathrm{sin}\:\frac{{n}\pi}{\mathrm{4}}\right)^{\mathrm{2}} {tdt} \\ $$
Inegrate-0-4-t-B-n-sin-npi-4-2-tdt-