9. .
10. :
, . , .
, .
W=
i ;
Qi .
, , :
= / ,
- ;
- : , (, );
;
3 - ;
at , .
, , . , .
. , . , .
, , . () :
= q/ qb,
q, qb- .
, , .
, - , . . . , .
, .
|
|
. . , . , , - .
(Q) :
Qi = Pi/Pib; i = 1,2, 3,..., ,
Pi, Pib- i- ;
- .
. . .
() :
= m1P1+m2P2 +... + mnPn;
= m1q1 + m2q2 +...+ mnqn,
m1,m2,..., mn, - ;
1, 2,..., n - , , ;
q1, q2,..., qn - , .
. : , , , (. 2) - 5 .
2
, | ||
5 | 4 | |
3 | 4,5 | |
2 | 3 | |
4 | 4 |
= m1-1 + m2P2 +m3P3 + mn n = 5*4,0 + 3*4.5 + 2*3.0 + 4*4,0 = 55,5 .
= 48 . :
= / = 55,5/48 = 1,16, .. .
. , . .
. , .
. . 1.. , , - .
, - =0,35, 0,30, , , , . , . =0.55, =0.3 .
|
|
- , ( ).
. : , , . :
= å i* ai,
i - , - ;
ai- .
: , , , .
0 - 1, ai.
, .. , : . .