Question: Use the dual simplex method with an artificial objective function to find a solution to the system of equations : x1- x2 + 4x3 =

Use the dual simplex method with an artificial objective function to find a solution to the system of equations :

x1- x2 + 4x3 = 4

x1 + x2 = 2

x1 + 2x2 - 2x3 + x4 = 3

in which x1, x2, x3, x4>= 0.

hint : use row reduce to find the basic variables first and then solve by dual simplex metod

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