. . . .
, . , (), .
() , () (Q). , . , , . , , , R (revenue).
, , TR (total revenue), :
TR = P * Q.
.
(), .
. , , . , , . ( ).
:
Tp = TR - TC.
:
Ap = Tp/Q.
p (marginal profit). . .
, , . , . , , . , , .
.
.
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, . , .
, , .
( ) MR (marginal revenue) .
MR = TRn - TRn-1/Qn Qn-1
MR = ∆TR/∆Q
, , , . . MR = P. , , .
? , , . . :
P = MR = MC = AC.
, . , .
() (MR), () (AVC) (. 12). :
Pe = MRe = MCe = ACe.
, Pa AVC Qa, FC:
Pa = MRa = MCa =AVCa
. 13. .
(TR), (TC), , :
Tp = TR TC.
, . , . , . : , . , , . , , .
() . , ( 1 . ) . : (L) (), :
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1. , . . (C) , (MRL) (MRK) (PL) (PK) , :
MRL/PL = MRK/PK = l |const ≠ 1
2. , :
MRL/PL = MRK/PK = 1.
; . , , ..
, (P) (), () (LAC):
= = = LAC.
1. .
2. ?
3. ?
4. .