Question Number 174425 by mnjuly1970 last updated on 31/Jul/22
$$ \\ $$$$\:\:\:{Calculate}\:: \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\: \\ $$$$\:\:\:\:\:\boldsymbol{\phi}\:=\:\int_{\mathrm{0}} ^{\:\frac{\pi}{\mathrm{2}}} \frac{\:{x}^{\:\mathrm{3}} }{{sin}^{\:\mathrm{2}} \left(\:{x}\:\right)}{dx}=\:? \\ $$$$\:\:\:\:\:\:\:−−− \\ $$