Given the profit maximization model: π = zF(K, N) - rK - wN , where both N and K are considered to be endogenous variables, find the value of the expression: dK/dw if it is assumed that FNN = -5, FKK = -4, FKN = FNK = 2, and z = 1. Show all steps. NOTE: This involves taking the total differential, putting into matrix notation, etc.).