3000 5 2 1 "Dual simplex, Example 4.4-1" 2 3 "Minimize" "" "" "" "" "3.00" "2.00" "" "" "3.00" "1.00" ">=" "3.00" "4.00" "3.00" ">=" "6.00" "1.00" "1.00" " <=" "3.00" "0.00" "0.00" "" "" "infinity" "infinity" "" "" "n" "n" "" ""