Example 3.4-1 Minimize z = 4x1 + x2 subject to 3x1 + x2 = 3 4x1 + 3x2 = 6 x + 2x2 5 4 X1, X2 20 For the above problem, the model in standard form for Phase I of the Two Phase Method is given below. Solve this Phase I model by the Simplex Method. Phase I Min Z = R +R = 1 2 S.t. 1 2 3x2 + x2 +R = 3 4x2 + 3x2 - S2 + R = 6 + S = 4 X2, X2, S2, R2, R2, S3 >= 0 x + 2x2 1 3