Question: please do not change the title Consider the following problem max Z= 13x1 + 7x2 + 6x3 s.t. 3x1 + x2 + x3 0 Final

please do not change the titleplease do not change the title Consider the

Consider the following problem max Z= 13x1 + 7x2 + 6x3 s.t. 3x1 + x2 + x3 0 Final simplex tableau for the following model is as follows: Coefficients of: Basic Variable Equation RHS Z X1 X2 X3 X4 X5 X6 Z 1 0 0 1 0 1/3 19/3 151 X1 (0) (1) (2) 0 1 0 0 0 -1/3 2/3 3 X2 0 0 1 1 0 2/3 -1/3 16 X4 (3) 0 0 0 0 1 1/3 -5/3 7 Answer the following questions independently: a) If c3 (the coefficient of the x3 in the objective function) is increased from 6 to 7 and the coefficient of xz in the 2nd constraint is changed from 2 to 1, is the previous optimal solution still optimal? If not, what is the new optimal solution? Do not solve the problem from scratch. (20 pts) b) Suppose that the constraint x1 + x2 + x3 = 18 is added to the LP given above. Does the optimal solution provided by the final simplex tableau change? If yes, find the new optimal solution. Do not solve the problem from scratch and do not consider the changes given in a). (15 pts)

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