Cost Curve成本函数.pdfVIP

Chapter 22 Cost Curves Types of Cost Curves A total cost curve is the graph of a firm’s total cost function. A variable cost curve is the graph of a firm’s variable cost function. An average total cost curve is the graph of a firm’s average total cost function. Types of Cost Curves An average variable cost curve is the graph of a firm’s average variable cost function. An average fixed cost curve is the graph of a firm’s average fixed cost function. A marginal cost curve is the graph of a firm’s marginal cost function. Types of Cost Curves How are these cost curves related to each other? How are a firm’s long-run and short- run cost curves related? Fixed, Variable Total Cost Functions F is the total cost to a firm of its short- run fixed inputs. F, the firm’s fixed cost, does not vary with the firm’s output level. c (y) is the total cost to a firm of its v variable inputs when producing y output units. cv(y) is the firm’s variable cost function. c (y) depends upon the levels of the v fixed inputs. Fixed, Variable Total Cost Functions c(y) is the total cost of all inputs, fixed and variable, when producing y output units. c(y) is the firm’s total cost function; c(y) Fc (y). v $ F y $ cv(y) y $ cv(y) F