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Aplicacion del metodo simplex pdf
1.
INVESTIGACION DE OPERACIONES APICACION
DEL METODO SIMPLEX INGENIERIA INDUSTRIAL 4° ISRAEL RIVAS ALVAREZ ASESESOR: ING. IND MIGUEL ANGEL RUBIO DAMAZO
2.
Aplicacion del metodo
simplex.......................................................................................... 3 Ejercicio #1 ............................................................................................................................... 3 Ejercicio #2 ............................................................................................................................... 4 3.- ZMAX = 4X1+3X2+6X3 4X1+3X2+6X3+0S1+0S2 ................................................... 5 EJERCICIO #4.- ....................................................................................................................... 7 EJERCICIO #5.- ....................................................................................................................... 8 EJERCICIO #6 .......................................................................................................................... 9 EJERCICO #7 ......................................................................................................................... 10 EJERCICIO #8 ........................................................................................................................ 11 EJERCICIO #9 ........................................................................................................................ 12 EJERCICIO #10 ..................................................................................................................... 13 EJERCICIO #11 ..................................................................................................................... 14 EJERCICIO #12 ..................................................................................................................... 15 EJERCICIO #13 ..................................................................................................................... 16
3.
Aplicación del método
simplex Ejercicio #1 Zmax= 2x1+3x2………….. Z-2x1-3x2=0 -3x1+x22≤1……………… -3x1+x2+S1=1 4x1+2x2≤20……………..4x1+2x2+S2=20 4x1-4x2≤10………………4x1-4x2+S3=10 -x1+2x2≤5………………..-x1+2x2+S4=5 x1,x2≥0 S2 S3 S4 z X1 -3 4 4 -1 -2 X2 1 2 -1 2 -3 S1 1 0 0 0 0 S2 0 1 0 0 0 S3 0 0 1 0 0 S4 0 0 0 1 0 R 1 20 10 5 0 0 S1 S2 S3 S4 X2 z 0 0 0 0 1 -3 10 1 5 -11 1 0 0 0 0 1 -2 0 -2 3 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 1 18 11 3 3 0 1 -6/5 0 0 3/5 14/5 0 0 2 1 0 -2 12 0 0 2/5 0 1 -1/5 52/5 1 0 -2/5 0 0 1/5 3/5 0 0 -7/5 0 0 11/5 48/5 0 0 1 0 X2 0 S2 0 S3 0 X1 1 z Z=48/5 X1=3/5 X2=14/5 Por lo tanto Zmax= 2x1+3x2…………. Zmax= 2(3/5)+3(14/5) Zmax= 6/5+42/5 Zmax=48/5 o.k
4.
Ejercicio #2 Zmin= 5x1+7x2………5x1+7x2-0S1-0S2-0S3+MA1+MA2+MA3 2x1+3x2
≥ 147………..2x1+3x2-S1+A1=147 3x1+3x2≥210………….3x1+3x2-S2+A2=210 X1+x2≥63……………….x1+x2-S3+A3=63 X2,x1≥0 Cj MA1 MA2 MA3 Zj Cj-Zj 5 X1 2 3 1 6M 5-6M 7 X2 3 3 1 7M 7-7M 0 S1 -1 0 0 -M -M 0 S2 0 -1 0 -M M 0 S3 0 0 -1 M -M M A1 1 0 0 M 0 M A2 0 1 0 M 0 M A3 0 0 1 M 0 b 147 210 63 420
5.
3.- ZMAX = 4X1+3X2+6X3 4X1+3X2+6X3+0S1+0S2 3X1+X2+3X3≤30
3X1+X2+3X3+S1=30 2X1+2X2+3X3≤40 2X1+2X2+3X3+S1=40 0S1 4 X1 3 3 X2 1 6 X3 3 0 S1 1 0 S2 0 B 30 0S2 2 2 3 0 1 40 ZJ CJ-ZJ 0 4 0 3 0 6 0 0 0 0 0 --- CJ 6X1 -3R1+R2 0S2 4 X1 1 -1 3 X2 1/3 1 6 X3 1 0 0 S1 1/3 -1 0 S2 0 0 B 10 10 ZJ CJ-ZJ 6 -2 2 1 6 0 0 0 0 0 60 --- CJ 4 X1 4/3 -1 3 X2 0 1 6 X3 6 0 0 S1 1/3 -1 0 S2 0 0 B 20/3 10 ZJ 5 3 6 -1 0 70 CJ-ZJ -1 0 0 1 0 --- 4 X1 3 X2 6 X3 0 S1 0 S2 B CJ -1/3 R2+R1 6X3 3X2 CJ R2/1/3 0S1 4 0 18 1 0 20 R1+R2 3X2 3 1 0 0 0 30 ZJ 9 3 0 0 0 90 CJ-ZJ -5 0 6 0 0 ---
6.
4 X1 CJ 3 X2 6 X3 0 S1 0 S2 B 20/18 6X3 4/18 0 1 1/18 0 3X2 3 1 0 0 0 30 ZJ 10 1/3 3 6 1/3 0 96 2/3 CJ-Z -6
1/3 6 0 -1/3 0 X3=10 X2=10 S1=20 Zj=96 2/3 ---
7.
EJERCICIO #4.ZMAX =3X1+4X2+5X3 3X1+4X2+5X3+0S1+0S2+0S3 3X1+X2+5X3≤150 3X1+X2+5X3+S1=150 X1+4X2+X3≤120 X1+4X2+X3+S2=120 2X1+2X3≤105 2X1+2X3+S3=105 CJ 0S1 0S2 0S3 ZJ CJ-ZJ CJ -5R2+R1 0S1 5X3 -2R2+R3 0S3 ZJ CJ-ZJ X1=0 X2=0 X3=120 ZJ=600 3 X1 3 1 2 0 3 4 X2 1 4 0 0 4 5 X3 5 1 2 0 5 0 S1 1 0 0 0 0 0 S2 0 1 0 0 0 0 S3 0 0 1 0 0 B 3 X1 -2 4 X2 -19 5 X3 0 0 S1 1 0 S2 -5 0 S3 0 -450 1 0 4 -8 1 0 0 0 1 -2 0 1 120 -135 5 -2 20 -16 5 0 0 0 5 -5 0 0 600 - 150 120 105 0 - B
8.
EJERCICIO #5.Z MAX=
5X1+3X2+4X3 5X1+3X2+4X3+0S1+0S2 2X1+X2+X3≤120 2X1+X2+X3+S1=120 3X1+X2+2X3≤30 3X1+X2+2X3+S2=30 5 3 4 0 0 CJ 0S1 0S2 ZJ CJ-ZJ X1 2 3 0 5 X2 1 1 0 3 X3 1 2 0 4 S1 1 0 0 0 S2 0 1 0 0 B 120 30 0 - CJ 5 X1 0 3 X2 1/3 4 X3 -1/3 0 S1 1 0 S2 -2/3 B 100 0 0 1/3 5/3 4/3 2/3 10/3 2/3 0 0 0 1/3 5/3 -5/3 10 50 - 5 X1 -1 3 X2 0 4 X3 -1 0 S1 1 0 S2 -1 B 90 3 12 -7 1 5 -2 2 7 -3 0 3 -3 1 2 -2 30 420 - -2R2+R1 0S1 5X1 ZJ CJ-ZJ CJ -1/3R2+R1 3X2 SX1 ZJ CJ-ZJ X1=10 X2=30 ZJ=420 5
9.
EJERCICIO #6 ZMAX=2X1+4X2 +3X3…………2X1+4X2
+3X3+0S1+0S2+0S3 X1 +3X2+2X3 ≤ 30………… X1 +3X2+2X3+S1= 30 X1+X2+X3 ≤ 24………… X1+X2+X3+0s 2 =24 3X1+5X2+3X3 ≤ 60………… 3X1+5X2+3X3 +0S3 = 60 X1, X2, X3 ≤ 0 Cj 0S1 0S2 0S3 Zj Cj-Zj R1(1/3) -R1+R2 -5R1+R3 X1 2 1 1 1 0 2 X2 4 3 1 5 0 4 X3 3 2 1 3 0 3 S1 0 1 0 0 0 0 S2 0 0 1 0 0 0 S3 0 0 0 1 0 0 Cj 4X1 S2 S3 Zj Cj-Zj X1 2 1/3 2/3 -2/3 4/3 2/3 X2 4 1 0 0 4 0 X3 3 2/3 1/3 -1/3 8/3 1/3 S1 0 1/3 -1/3 -5/3 4/3 -4/3 S2 0 0 1 0 0 0 X1=0 X2=10 X3=0 b 30 24 60 0 S3 0 0 0 1 0 0 Zj=40 30/10=10 24/1=24 60/5=12 b 10 14 10 40
10.
EJERCICO #7 ZMIN=5000X1+7000X2 …………5000X1+7000X2
-0S1-0S2+MA1+MA2 -2X1 +X2≥1………… -2X1 +X2 -S1+A1= 1 X1 -2X2≥1………… X1 -2X2 –S2+A2= 1 X1, X2, X3 ≥0 Cj MA1 MA2 Zj Cj-Zj 2R2+R1 X1 5000 -2 1 -M X2 7000 1 -2 -M 5OOO-M Cj MA1 5000X2 Zj Cj-Zj 7000-M X3 0 -1 0 -M M S1 0 0 -1 -M M S2 M 1 0 M 0 S3 M 0 1 M 0 X1 5000 0 1 X2 7000 -3 -2 X3 0 -1 0 S1 0 0 -1 S2 M 1 0 S3 M 0 1 b 5000 -3M-10000 -2M-5000 3M+5000 3M+17000 M 0 2M+5000 0 -M M X1=1 X2=0 2M+5000 Zj=3M+5000 b 1 1 M -M-5000 1/-2=-1/2 1/1=1 1 1
11.
EJERCICIO #8 ZMAX=5X1+9X2 +7X3…………5X1+9X2
+7X3+0S1+0S2+0S3 X1 +3X2+2X3 ≤ 10………… X1 +3X2+2X3+S1= 10 3X1+4X2+2X3 ≤ 12………… 3X1+4X2+2X3+0S2 =12 2X1+X2+2X3 ≤ 8………… 2X1+X2+2X3+0S3 = 8 X1, X2, X3 ≤ 0 Cj 0S1 0S2 0S3 Zj Cj-Zj -3R2+R1 1/4R2 -R1+R3 2R1 -1/2R1 +R2 -3/2R1 +R3 X1 5 1 3 2 0 5 X2 9 3 4 1 0 0 X3 7 2 2 2 0 7 S1 0 1 0 0 0 0 S2 0 0 1 0 0 0 S3 0 0 0 1 0 0 Cj 0S1 9X2 0S3 Zj Cj-Zj X1 5 -5/4 3/4 5/4 27/4 -7/4 X2 9 0 1 0 9 0 X3 7 1/2 1/2 3/2 9/2 5/2 S1 0 1 0 0 0 0 S2 0 -3/4 1/4 -1/4 9/4 -9/4 S3 0 0 0 1 0 0 Cj 7X3 9X2 0S3 Zj Cj-Zj X1 5 -5/2 2 5 1/2 9/2 X2 9 0 1 0 9 9 X3 7 1 0 0 7 0 S1 0 2 -1 -3 5 -5 S2 0 -6/4 1 2 -3/2 -3/2 S3 0 0 0 1 0 0 X1=0 X2=2 X3=2 b 10 12 8 0 Zj=32 10/3=3.3 12/4=3 8/1=8 b 1 3 5 27 b 2 2 2 32 1/1/2= 2 3/1/2 = 6 5/ ½ = 10
12.
EJERCICIO #9 Z MAX=
3x1+5x2+6x3 3x1+5x2+6x3 2x1+x2+x3 ≤ 4 ZJ=16 2x1+x2+x3+s1 = 4 X3 =2 X1+2x2+x3 + s2= 4 X1+2x2+x3 ≤ 4 X2 =2 X1+x2+2x3 ≤ 4 X1+x2+2x3+ s3 = 4 X1+x2+x3 ≤ 3 X1+x2+x3+s4 = 3 X1=0 CJ 3 X1 5 X2 6 X3 0 S1 0 S2 0 S3 0 S4 b/R S1 2 1 1 1 0 0 0 4/1= 4 S2 1 2 1 0 1 0 0 4/1=4 S3 1 1 2 0 0 1 0 4/2=2 1 1 1 0 0 0 1 3/1=3 ZJ 0 0 0 0 0 0 0 0 CJ-ZJ 3 5 6 0 0 0 0 3 X1 3/2 ½ ½ ½ 3 0 1 0 0 1 5 -2 5 X2 1/2 ½ ½ ½ 3 2 0 0 0 1 5 0 6 X3 0 0 1 0 6 0 0 0 1 0 6 0 0 S1 1 0 0 0 0 0 1 0 0 0 0 0 0 S2 0 1 0 0 0 0 0 1 0 0 0 0 0 S3 -1/2 -1/2 ½ -1/2 3 0 0 0 1 -1 1 -1 0 S4 0 0 0 1 0 0 -2 -2 -2 2 -2 2 S4 CJ ZJ CJ-ZJ ZJ CJ-ZJ - b/R 2 0 2 1 12 1 1 1 1 2 16 -
13.
EJERCICIO #10 Z MIN=
2X1+3X2+X3 X1=2 2X1+3X2+X3 -0S1 -0S 2 +0S3+MA1+MA2 X2=9/5 X1+4X2+2X3 ≥ 8 X1+4X2+2X3-S1+A1 = 8 3X1+2X2 ≥ 6 X3=3 3X1+2X2 - S2+A2 = 6 ZJ=7 X1, X2, X3 ≥ 0 3 X1 1 3 4M 24M 0 5 X2 4 2 6M 3-6M 6 X3 2 0 2M 1-2M 0 S1 -1 0 -M M 0 S2 0 -1 -M M 0 A1 1 0 M -M 0 A2 0 1 M -M b/R 8 6 14M - 10/3 2 -1 1/3 1 -1/3 6 1 2 2/3 4/3+10/3M 0 2M 0 -M -1/3 -2/3+1/3M 1 4 CJ-ZJ 0 1-2M M -(-2/3+1/3M) R1/ 10/3 3X2 -2/3R1+R2 2X2 ZJ CJ-ZJ R1/2/3 X3 2/5R1+R2 2X1 ZJ CJ-ZJ 0 3(2/3+10/3M) 1 -3/10 -3/10 1 0 -2/5 2 0 0 1 3 0 5/3 2/3 2 0 3 0 CJ MA1 MA2 ZJ CJ-ZJ -R2+R1 MA1 2X1 ZJ 6 4+6M 1/10 -1/3 2/3+(1/3M) -4 -(2/3(1/3M) 3/10 -1/10 1/5 -2/5 -1/5 1/15 4/5 -1/2 -1/2 1 0 -1/2 1/2 -1/2 0 -1/2 1/2 1/6 -1/3 1/2 -1/2 ½ 0 -1/6 1/6 -1/6 -2/15 7 3 2 1 0 -1/2 1/2 -1/2 1/2 1/2 -1/2 -13/30 13/30 7 - 9/5
14.
EJERCICIO #11 Zmin= 2X1+
X2+ 3X3------------------------------2X1+ X2+ 3X3+0S1-0S2+MA1 5X1+2X2+7X3=420----------5X1+2X2+7X3+0S1=420 3X1+2X2+5X3≥280---------3X1+2X2+5X3-0S2+A1=280 X1,X2,X3≥0 2 1 3 0 0 M CJ X1 X2 X3 0S1 0S2 A1 R 0S1 5 2 7 1 0 0 420 420/7=60 MA1 3 2 5 0 -1 1 280 280/5=56 Zj 3M 2M 5M 0 -M M 280M CJ-Zj 2-3M 1-2M 3-5M 0 +M 0 -------- 2 1 3 0 0 M CJ X1 X2 X3 0S1 0S2 A1 R 0S1 4/5 -4/5 0 1 7/5 -7/5 60 -7(R2)+R1 3x3 3/5 2/5 1 0 -1/5 1/5 56 R2(1/5) Zj 9/5 6/5 3 0 -3/5 3/5 168 CJ-Zj 1/5 -1/5 0 0 +3/5 m-3/5 -------- Zj=168 X1=60 X2=0 X3=56
15.
EJERCICIO #12 Zmin= 3X1+
2X2+ 4X3------------------------------3X1+ 2X2+ 4X3+0S1-0S2+MA1 2X1+X2+3X3=60----------2X1+X2+3X3+S1=60 3X1+5X2+5X3=120---------3X1+3X2+5X3-S2+A1=120 X1,X2,X3≥0 3 2 4 0 0 M CJ X1 X2 X3 0S1 0S2 A1 R 0S1 2 1 3 1 0 0 60 60/3=20 MA1 3 3 5 0 1 1 120 120/5=24 Zj 3M 3M 5M 0 M M 120M CJ-Zj 3-3M 2-3M 4-5M 0 -M -M -------- 3 2 4 0 0 M CJ X1 X2 X3 0S1 0S2 A1 R 0S1 2/3 1/3 1 1/3 0 0 20 R1(1/3) 4x3 -1/3 1/3 0 -5/3 1 1 24 -5R1+R2 Zj -4/3 16/3 0 -20/3 4 4 96 CJ-Zj 13 -10/3 4 20/3 4 4M -------- Zj=96 X3=24 X2=0 X1=0
16.
EJERCICIO #13 Zmax= -X1+
2X2+ X3------------------------------3X1+ 2X2+ 4X3+0S1-0S2+MA1 +3X2+X3≤120----------3X2+X3-S1 =120 X1-X2-4X3≤120--------- X1-X2-4X3-S2=80 -3X1+X2+2X3≤100-------3X1+X2+2X3-S3=100 X1,X2,X3≥0 CJ X2 2 3 X3 1 1 -S1 0 -1 -S2 0 0 -S3 0 0 R 0S1 X1 -1 0 120 120/3=40 0S2 1 -1 -4 0 -1 0 80 180/-1=-180 0S2 -3 1 2 0 0 -1 100 100/-1=-100 Zj 0 0 0 0 0 0 Cj-Zj -1 2 1 0 0 0 CJ X2 2 1 X3 1 1/3 -S1 0 -1/3 -S2 0 0 -S3 0 0 R 2X2 X1 -1 0 40 R1(1/3) 0S2 1 0 -11/3 -1/3 -1 1 120 R1+R2 0S2 -3 0 5/3 1/3 0 -1 Zj 0 2 2/3 -2/3 0 0 Cj-Zj -1 0 1/3 2/3 0 0 ZJ=80 X1=0 X2=40 X3=0 -1R1+R3 80
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