二、生产弹性与生产投入三阶段的划分 Definition Total costs (TC The sum of total fixed costs and total variable costs: TC=TFC+TVC Average(total cost(AC) Total cost per unit of output: AC=TC/Q=AFC+AVC Marginal cost Mc) The cost of producing one more unit of output MC=△TCQ Explicit cost The payments to outside suppliers of inputs二、生产弹性与生产投入三阶段的划分 Definition Total costs (TC) The sum of total fixed costs and total variable costs: TC=TFC+TVC Average (total) cost (AC) Total cost per unit of output: AC=TC/Q=AFC+AVC Marginal cost (MC) The cost of producing one more unit of output: MC=ΔTC/ΔQ Explicit cost The payments to outside suppliers of inputs