(b) In each of the following cases, first verify that the given basis B is feasible for the primal.

Next, using Y = CBB-I , compute the associated dual values and verify whether or not the primal solution is optimal. .

(i) B = (P4' P3) (iii) B = (PI> P2)

(ii) B = (P2, p)) (iv) B = (PI> P4 )