a competitive firm has a continuous marginal cost curve. it finds that as output increases, its marginal cost curve first rises, then falls, then rises again. if it wants to maximize profits, the firm should never produce at a positive output where price equals marginal cost and marginal cost decreases as output increases.
cnc闭环系统的反馈信号可以从下列部位取得
沿刀具前进方向观察刀具中心轨迹偏在工件轮廓右边时,用右刀补。
if the equlibrium price of gasoline is $1.00 per gallon and the government places a price ceiling on gasoline of $1.50 per gallon, the result will be a shortage of gasoline
an externality is a cost or a benefit imposed upon someone by actions taken by others.
a production isoquant is a locus of combinations of inputs that are equally profitable.
if a monopolist faces a competitive labor market, it will hire labor up to the point where the price of output times the marginal product of labor equals the wage rate
if a monopsonist pays the wage rate w; then the amount of labor that he can hire is l(w) = aw, where a is a positive constant. the marginal cost of labor to the monopsonist is: