.
1. - .
, R :
max = TR -TC
. 5.3.
. 5.3 , , , , R. R . () , .. , .
: , .
=0.
( )- .
=()`= d /dQ.
>0, , . <0, , . =0 .
( =0) .
2. - .
=()`= d /dQ,
()`= dTR/dQ-dTC / dQ.
dTR/dQ=MR, dTC/dQ=, , :
=R.
(C>R), . (C<R), , =R Q* , . 5.4.
. 5.4.
MC=MR , , :
`` (Q)=TR``(Q)-TC``(Q) <0
MR(Q)=TR`(Q), MC(Q)=TC`(Q),
MR`(Q)-MC`(Q) <0.
, (. 5.4). MR=MC ( . 5.5).
. 5.5.