方法 )求 max4.8x11+4.8x21+5.6x12+5.6x22-10x xII+x12-x<500 x21+x22<1000 0.5x11-0.5x21>0 0.4x120.6x22>0 X<500 LP OPTIMUM FOUNDAT STEP OBJECTIVE FUNCTION VALUE 4800.000 VARIABLE VALUE REDUCED COST 500.000000 0.000000 X21 500.000000 0.000000 X12 0.000000 0.266667 0.0000 ROW SLACK OR SURPLUS DUAL PRICES 9600000 500.000 0.000000 9.600000 0.000000 -9.333333 500.000000 0.000000 NO. ITERATIONS (二)求R2 max4.8x11+4.8x21+5.6x12+5.6x22-8x x11+x12-X<50 X21+x22<1000 0.5x11-0.5x21 0.4x120.6x22>0 X<1000方法一 （一）求 R1 max 4.8x11+4.8x21+5.6x12+5.6x22-10x st x11+x12-x<500 x21+x22<1000 0.5x11-0.5x21>0 0.4x12-0.6x22>0 x<500 end LP OPTIMUM FOUND AT STEP 4 OBJECTIVE FUNCTION VALUE 1) 4800.000 VARIABLE VALUE REDUCED COST X11 500.000000 0.000000 X21 500.000000 0.000000 X12 0.000000 0.266667 X22 0.000000 0.000000 X 0.000000 0.400000 ROW SLACK OR SURPLUS DUAL PRICES 2) 0.000000 9.600000 3) 500.000000 0.000000 4) 0.000000 -9.600000 5) 0.000000 -9.333333 6) 500.000000 0.000000 NO. ITERATIONS= 4 （二）求 R2 max 4.8x11+4.8x21+5.6x12+5.6x22-8x st x11+x12-x<500 x21+x22<1000 0.5x11-0.5x21>0 0.4x12-0.6x22>0 x>500 x<1000