(income) , ; , .
(gross income) ; () .
(marginal income) .
( average income) (.. ).
, ( law of diminishing marginal returns) , .. .
( costs) , ; .
(opportunity costs) , ( , ).
( sunk costs) , , ; , .
( account costs) ( , ).
(total costs) , , .
. .
, (explicit costs) , , (. ).
, , (implicit costs) , . , .
, - (variable costs) , ; , .
, - (fixed costs) , ; , .
(marginal costs) , .
(average costs) ; .
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. .
(long-run) , , .
(short-run) , .
, . .
(profit) .
(account profit) () () .
(normal profit) , , , (, ).
(economy profit) ( ).
(total product) .
(marginal product) , .
(marginal revenue product) , , .
(average product) - .
(average revenue product) - , .
, (minimum efficient scale) , .
(scale effect) ( ) .
(increasing returns to scale) , , .
( decreasing returns to scale) , , .
( constant returns to scale) , .
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