3-56. Solve the following LP: Maximize z = 2x1 - x2 + 3x3 subject to x1 x2+5x3 = 10 2x1 x2 + 3x3 ≤40 X1, X2, X30 From the optimal tableau, show that all the alternative optima are not corner points (i.e., nonbasic). Give a two-dimensional graphical demonstration of the type of solution space and objective function that will produce this result. You may use TORA for convenience.