, , , TC (total cost), VC (variable cost), FC (fixed cost). ( )
, .
(q) = CV(q) + 0 , , . .
, 0 , , CV(0)=0. , (0, 0). . 9 . [5,12].
. 9. . | .10. , . |
( ), .
A1: () .
A1 , .
.
MC(q) (marginal cost).
: , ,
.
A2: (, ), () , , .
, MC(q) C(q+1)C(q) .
A2 , q ³0, . , () q ³ 0, .
( ATC average total cost) , .
, :
AVC(q) (average variable cost), AFC(q) (average fixed cost).
|
|
AFC(q):
; ; . (1)
(1) , 0, .
AVC(q):
(2)
, . (3)
(2) , . (3) , AVC AC, q .
, . C(q)=qAC(q),
, AC(q) , AC(q)>0 ђ(q)>AC(q), , . AC(q) , AC(q)<0 ђ(q)<AC(q).
? :
, .
, , .
:
A3: C , , , ( ).
:
,
, AC(q), , .
, , q *. q * AC(q*)=0. ( ) .
.
: () , () ( ) ;
, MC AVC AC .
. 10 (. [5,12])
, f(x) , .