Question 5 [8 Marks] (Long Answer Question) File Upload Required A model created by an engineer is represented by the following multivariable functions w = xegz, c = su, y = st, z = tu. (a) Find ow Ow Ow ' az (b) Find ax ay Oz as' as' as , leaving your answers as expressions in terms of s, t, and u. (c) Find Ox dy Oz at ' at' at , leaving your answers as expressions in terms of s, t, and u. (d) Find Ox dy Oz du' du du , leaving your answers as expressions in terms of s, t, and u. (e) Find the values of- ow as - when s = 2, t = 1, u = -2