:
QS = m + nP, (3.24)
n > 0, m .
, : PS = f (Q).
, .
, , , , . , , .
.
.
() (ESP) , . .
.
( ) .
, 2, :
= = × , (3.25)
( ): = (P1+ P2)/2; = (QS1+ QS2)/2; ΔQS = Q2 Q1; ΔP = P2 P1.
:
- > 1, ;
- < 1, ;
- = 1;
- = ∞, ;
- = 0, .
. , . . , . , . , , .
|
|
() , i- (QSi), j- (Pj) . :
= × . (3.26)
, , . , , . . ( ).
. () , . . , .
.
, .