Return to the LP of Exercise 5-7.

(a) Compute the basis matrix inverse corresponding to the basic variables indicated.

(b) Compute the corresponding pricing vector of 5.45 .

(c) Without generating the implied simplex directions, use your pricing vector to determine whether each of them will be improving.

(d) For each improving simplex direction in part (c), generate the corresponding matrix E of 5.43 , and compute the next basis matrix inverse.