Hello,
I have a model like this. When I try to get a dual I have all value 0. GLPK.glp_get_col_dual(lp,colId+1) send 0 for all value. How can I solve this problem? Thank you Onor P.S. my model is \* Problem: Unknown *\ Minimize objective: + x_1 + x_2 + x_3 + x_4 + x_5 Subject To constraint1: + 5 x_1 >= 48 constraint2: + 2 x_2 >= 35 constraint3: + 2 x_3 >= 24 constraint4: + 2 x_4 >= 10 constraint5: + x_5 >= 8 End
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