Question: Find \(\frac{\partial w}{\partial s}\) and \(\frac{\partial w}{\partial t}\) at the given points

\[\begin{aligned} & w={{y}^{3}}-3{{x}^{2}}y \\ & x={{e}^{s}},\,\,y={{e}^{t}} \\ & s=0,\,\,t=1 \\ \end{aligned}\]