#$3.(15)$ Derive following relations:

a$($D$)/($Dt$)$Q$^(*)=($del$)/($delt$)$Q$+($vec$($V$)*$grad$)$QQ$^(*)$ are physical quantities represented on the Lagrangian and Eulerian

coordinate system, respectively.$($D$)/($Dt$)$B$\_($sys $)=($del$)/($delt$)\backslash$int$\_($CV$)(\backslash$beta $\backslash$rho $)$dVol$+\backslash$int$\_($CS$)\backslash$beta $\backslash$rho $($vec$($V$)*$vec$($n$))$dA where $\backslash$beta $=($d$($B$))/($dm$)$