Question: Use the simplex method for bounded variables to solve the following problem: min x1 +2x2+3x3-x4 such that 2x1-x2+x3-2x4

Use the simplex method for bounded variables to solve the following problem:

min x1 +2x2+3x3-x4

such that

2x1-x2+x3-2x4<=6

-x1+2x2-x3+x4<=8

2x1+x2-x3 >=2

0<=x1<=3

1<=x2<=4

0<=x3<=8

2<=x4<=5

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