. (TR-Total Revenue) - .
(28)
, - . -. , (.22). : tg φ = P. , , .
, - (. 23).
TR TC TR
TC
φ Q1 Q2 Q
.22
TR TC
TC
Q1 Q2 TR Q
. 23
(MR- Marginal Revenue) - ( ).
MR=⌂TR/⌂Q (29)
, , .
MR=TR'(Q) (30)
(R- verage Revenue) - , . .
AR=TR/Q=P (31)
(π- profit) - .
(26)
.22 23, [0; Q1) (Q2;∞) π<0. .
[Q1; Q2] π≥0.
.
.
, , () . .
(32)
, , () , . , .
(33)
.
, . , , .. , .