A model created by an engineer is represented by the following multivariable functions 10 = ye\

A model created by an engineer is represented by the following multivariable functions y = st2 , z = tu Dy Dz Dy Dz Dy Dz Du ' Du 2 Dw (a) Find (b) Find Ds (c) Find Dt (d) Find Du Dw Dy Ds Dt w = ye Dw Dz , leaving your answers as expressions in terms of s, t, and u. Ds leaving your answers as expressions in terms of s, t, and u. , leaving your answers as expressions in terms of s, t, and u. (e) Find the values of when s = 1 t