Changes in the Objective Function Coefficients. These changes affect only the optimality
of the solution. Such changes thus require recomputing the z-row coefficients (reduced
costs) according to the following procedure:
1. Compute the dual values using Method 2 in Section 4.2.3.
2. Use the new dual values in Formula 2, Section 4.2.4, to determine the new reduced
costs (z-row coefficients).