48x11+4.8x21+5.6x12+5.6x22-8x-r2=1000 LP OPTIMUM FOUND AT STEP OBJECTIVE FUNCTION VALUE 6000.000 VARIABLE VALUE REDUCED COST 0.000000 0.000000 0.400000 X12 1500.000000 0.000000 X22 1000.000000 0.000000 1000.000000 0.000000 R2 5000.000000 0.000000 ROW SLACK OR SURPLUS DUAL PRICES 0.000000 0.000000 3456)8 -6.400000 0.000000 -6.000000 500.000000 0.000000 0.000000 0.000000 0.000000 0.000000 NO. ITERATIONS (三)求R3 max48x11+48x21+5.6x12+5.6X22-6x Xl1+x12-x<500 x2I+x22<1000 0.5x11-0.5X21>0 0.4x120.6x22>0 X>1000 X<1500 48x11+4.8x21+5.6x12+5.6X22-6x3=30004.8x11+4.8x21+5.6x12+5.6x22-8x-r2=1000 end LP OPTIMUM FOUND AT STEP 7 OBJECTIVE FUNCTION VALUE 1) 6000.000 VARIABLE VALUE REDUCED COST X11 0.000000 0.000000 X21 0.000000 0.400000 X12 1500.000000 0.000000 X22 1000.000000 0.000000 X 1000.000000 0.000000 R2 5000.000000 0.000000 ROW SLACK OR SURPLUS DUAL PRICES 2) 0.000000 8.000000 3) 0.000000 2.000000 4) 0.000000 -6.400000 5) 0.000000 -6.000000 6) 500.000000 0.000000 7) 0.000000 0.000000 8) 0.000000 0.000000 NO. ITERATIONS= 7 （三）求 R3 max 4.8x11+4.8x21+5.6x12+5.6x22-6x st x11+x12-x<500 x21+x22<1000 0.5x11-0.5x21>0 0.4x12-0.6x22>0 x>1000 x<1500 4.8x11+4.8x21+5.6x12+5.6x22-6x-r3=3000 End