Economics 2150A/B Lecture Notes - Lecture 8: Fixed Cost, Fixed Capital, Variable Cost

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23 Dec 2016

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Cost curves allow for a firm to determine its profit maximization level of output. The decision of the quantity to produce and the mix of inputs all depends on the time frame available: short run or long run. Short run is a time frame in which the quantity of a certain resource is fixed (usually the fixed resource includes things like technology, buildings or in other words capital; k) The long run time frame is a time frame in which the quantities of all resources are variables. In this period, the firm can change the amount of capital used in production. Total cost: the um of the cost of all inputs used in production. Total fixed cost: the cost of all fixed inputs, which are usually independent of the level of output (usually k) Total variable cost: the total cost of all variable input, and it varies with the level of output. (usually l)

Related Questions

1. Theoretically, in a long-run cost function:

a. all inputs are fixed

b. all inputs are considered variable

c. some inputs are always fixed

d. capital and labor are always combined in fixed proportions

2. The short-run cost function is:

a. where all inputs to the production process are variable

b. relevant to decisions in which one or more inputs to the production process are fixed

c. not relevant to optimal pricing and production output decisions

d. crucial in making optimal investment decisions in new production facilities

3. Break-even analysis usually assumes all of the following except:

a. in the short run, there is no distinction between variable and fixed costs.

b. revenue and cost curves are straight-lines throughout the analysis.

c. there appears to be perfect competition since the price is considered to remain the same regardless of quantity

d. the straight-line cost curve implies that marginal cost is constant.

maroonllama628

constant costs

increasing returns to scale

constant returns to scale

isocost curve

decreasing returns to scale

isoquant

diseconomies of scale

long-run average cost

economies of scale

long-run marginal cost

economies of scope

marginal rate of technical substitution

expansion path

short-run expansion path

___A curve that displays all the various combinations of inputs that will produce a given amount of output.

___The rate at which one input is substituted for another along an isoquant.

___Line that shows all the possible combinations of inputs that can be purchased for a given total cost.

___A curve showing all of the cost-minimizing levels of input usage for various levels of output.

___When the usage of all inputs is increased by an equal proportionate amount, output ___increases by exactly the same proportion.

___When the usage of all inputs is increased by an equal proportionate amount, output increases by a larger proportionate amount.

___When the usage of all inputs is increased by an equal proportionate amount, output increases by a smaller proportionate amount.

___Cost per unit in the long run.

___The change in long-run total cost per unit change in output.

___When long-run average cost falls as output increases.

___When long-run average cost increases with increases in output.

___Long-run average and marginal costs are equal for all levels of output.

___The situation in which the joint cost of producing two goods is less than the sum of the separate costs of producing the two goods.

___Horizontal line showing the cost-minimizing input combinations for various output levels when capital is fixed in the short run.

aquamarineguinea-pig889

A price taking firm chooses its inputs to maximize short-run profits. Its Cobb-Douglass production function has the following form: q(L, K) = L^(1/2) K ^(1/3) . The output price is 1,000 per unit and the cost of each unit of input is 10. In the short-run, capital is fixed at 27 units.

(a) Set up the profit function in terms of labor only.

(b) Find the optimal choice of labor, L â .

Another price taking firm chooses its inputs to maximize long-run profits. Labor and capital are substitutes in production and both exhibit decreasing returns to scale, q(L, K) = L^(1/2) + K^(1/2) . The output price is 100 and the price of each of the inputs is 10.

(a) Set up the firmâs profit function and provide the two conditions for profit maximization.

(b) Find the profit maximizing levels of capital and labor.

rosearmadillo753

Economics 2150A/B Lecture Notes - Lecture 8: Fixed Cost, Fixed Capital, Variable Cost

ECON 2150A/B Full Course Notes

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