, . , , .
- , , ( ) , , . , -, -. - .
I II, II , .. . I II I II. :
, , . , z=C BXB BXB =b, :
:
, -:
I | XII | ||
z | CBB-1A-CI | CBB-1-CII | CBB-1b |
XB | B-1A | B-1 | B-1b |
B -1, CB, CI, CII, A b .
- , .
- () (). .
-
- , x j z -
P j - j - (,I), c j j - . , x j. NB ,
, j () z C BB -1b , (). j .
|
|
-
, , i - . :
(V) i i - - V.
Pk , , k , . , , , :
, k ,
, k :
, , .
1.1 -.
B=(P1, P 4, P 5, P 6) .
a) , B .
b) B.
B=(P1, P 4, P 5, P 6) X B =(x 1, s 2, s 3, s 4) B =(5, 0, 0, 0). B-1
z=CBXB =5*4+0*2+0*5+0*2=20.
1 2
B=(P1, P 4, P 5, P 6) 2 s1:
(z2-c2, z3-c3)=CBB-1[P2, P3]- (c2, c3)=
, 1.1 -.
z | x1 | x2 | s1 | s2 | s3 | s4 | |||
z | 1 | 0 | -2/3 | 5/6 | 0 | 0 | 0 | 20 | |
1 | 0 | 1 | 2/3 | 1/6 | 0 | 0 | 0 | 4 | |
s2 | 0 | 0 | 4/3 | -1/6 | 1 | 0 | 0 | 2 | |
s3 | 0 | 0 | 5/3 | 1/6 | 0 | 1 | 0 | 5 | |
s4 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 2 |
, z2 c 2 =-2/3 , X B =(x 1, s 2, s 3, s 4) , x 2.
2, . X B B-1P2.
2
, X B =(x 1, s 2, s 3, s 4) P4 P 2,
.
z =20-(-2/3)*3/2=21.
- , - .
. , , , ( ).
|
|
:
1 .
2 .
3 .
4 .
- . - . , -. , , .
1.1 .
- .
z | x1 | x2 | s1 | s2 | s3 | s4 | |||
z | 1 | 0 | 0 | 3/4 | 1/2 | 0 | 0 | 21 | |
1 | 0 | 1 | 0 | 1/4 | -1/2 | 0 | 0 | 3 | |
2 | 0 | 0 | 1 | -1/8 | 3/4 | 0 | 0 | 3/2 | |
s3 | 0 | 0 | 0 | 3/8 | -5/4 | 1 | 0 | 5/2 | |
s4 | 0 | 0 | 0 | 1/8 | -3/4 | 0 | 1 | 1/2 |