.
(FC fixed cost) , . , .
(VC variable cost) , : , , , . . , , . .
( - total cost) .
Q ;
C ;
FC ;
VC ;
TC () .
( - total cost) .
, ( average total cost) , .. = TC/ Q. U .
(AFC average fixed cost) , (AFC = FC/Q) (AVC average variable cost) (AVC = VC/Q).
. ( marginal cost) , .
= ∆TC/ ∆Q
: , .
.
, , , . , , .