The evaluation of reduced costs and the dual activities is independent of problem structure. For a basic solution, let be the matrix composed of the basic columns of and let be the matrix composed of the nonbasic columns of . The reduced cost associated with the th variable is
and the dual activity of the th row is
The Current Tableau is a section displayed when you specify either the TABLEAUPRINT option in the PROC LP statement or the TABLEAU option in the PRINT statement. The output contains a row for each basic variable and a column for each nonbasic variable. In addition, there is a row for the reduced costs and a column for the product
This column is labeled INV(B)*R
. The body of the tableau contains the matrix