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- Economies of scale
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Marginal costIn economics and finance, marginal cost is the change in total cost that arises when the quantity produced changes by one unit. That is, it is the cost of producing one more unit of a good.[1] If the good being produced is infinitely divisible, so the size of a marginal cost will change with volume, as a non-linear and non-proportional cost function includes the following:
In practice the above definition of marginal cost as the change in total cost as a result of an increase in output of one unit is inconsistent with the calculation of marginal cost as MC=dTC/dQ for virtually all non-linear functions. This is as the definition MC=dTC/dQ finds the tangent to the total cost curve at the point q which assumes that costs increase at the same rate as they were at q. A new definition may be useful for marginal unit cost (MUC) using the current definition of the change in total cost as a result of an increase of one unit of output defined as: TC(q+1)-TC(q) and re-defining marginal cost to be the change in total as a result of an infinitesimally small increase in q which is consistent with its use in economic literature and can be calculated as dTC/dQ. In general terms, marginal cost at each level of production includes any additional costs required to produce the next unit. If producing additional vehicles requires, for example, building a new factory, the marginal cost of those extra vehicles includes the cost of the new factory. In practice, the analysis is segregated into short and long-run cases, and over the longest run, all costs are marginal. At each level of production and time period being considered, marginal costs include all costs that vary with the level of production, and other costs are considered fixed costs. If the cost function is differentiable joining, the marginal cost is the cost of the next unit produced referring to the basic volume.
If the cost function is not differentiable, the marginal cost can be expressed as follows. 
A number of other factors can affect marginal cost and its applicability to real world problems. Some of these may be considered market failures. These may include information asymmetries, the presence of negative or positive externalities, transaction costs, price discrimination and others. Economies of scaleEconomies of scale is a concept that applies to the long run, a span of time in which all inputs can be varied by the firm so that there are no fixed inputs or fixed costs. Production may be subject to economies of scale (or diseconomies of scale). Economies of scale are said to exist if an additional unit of output can be produced for less than the average of all previous units— that is, if long-run marginal cost is below long-run average cost, so the latter is falling. Conversely, there may be levels of production where marginal cost is higher than average cost, and average cost is an increasing function of output. For this generic case, minimum average cost occurs at the point where average cost and marginal cost are equal (when plotted, the marginal cost curve intersects the average cost curve from below); this point will not be at the minimum for marginal cost if fixed costs are greater than zero. Aggregation problemAn aggregate in economics is a summary measure describing a market or economy. The aggregation problem refers to the difficulty of treating an empirical or theoretical aggregate as if it reacted like a less-aggregated measure, say, about behaviour of an individual agent as described in general microeconomic theory. Examples of aggregates in micro- and macroeconomics relative to less aggregated counterparts are:
Standard theory uses simple assumptions to derive general, and commonly accepted, results such as the law of demand to explain market behaviour. An example is the abstraction of a composite good. It considers the price of one good changing proportionately to the composite good, that is, all other goods. If this assumption is violated and the agents are subject to aggregated utility functions, restrictions on the latter are necessary to yield the law of demand. The aggregation problem emphasizes:
Franklin Fisher notes that this has not dissuaded macroeconomists from continuing to use such concepts. TradeTrade is the transfer of ownership of goods and services from one person or entity to another by getting something in exchange from the buyer. Trade is sometimes loosely called commerce or financial transaction or barter. A network that allows trade is called a market. The original form of trade was barter, the direct exchange of goods and services. Later one side of the barter were the metals, precious metals (poles, coins), bill, paper money. Modern traders instead generally negotiate through a medium of exchange, such as money. As a result, buying can be separated from selling, or earning. The invention of money (and later credit, paper money and non-physical money) greatly simplified and promoted trade. Trade between two traders is called bilateral trade, while trade between more than two traders is called multilateral trade. Trade exists for man due to specialization and division of labour, most people concentrate on a small aspect of production, trading for other products. Trade exists between regions because different regions have a comparative advantage in the production of some tradable commodity, or because different regions' size allows for the benefits of mass production. As such, trade at market prices between locations benefits both locations. Retail trade consists of the sale of goods or merchandise from a very fixed location, such as a department store, boutique or kiosk, or by mail, in small or individual lots for direct consumption by the purchaser. Wholesale trade is defined as the sale of goods or merchandise to retailers, to industrial, commercial, institutional, or other professional business users, or to other wholesalers and related subordinated services. Trading can also refer to the action performed by traders and other market agents in the financial markets. Directory: forms forms -> Form a-122 File No. Retirement homes act, 2010 application under section 116 of the act forms -> Course overview forms -> Pre-matric scholarship for students belonging to the minority communities forms -> Cutting Greenhouse Gases Global warming forms -> Bowl game blarney: Why Sports Tourism Trumps Logic in the Quest for a true College Football Champion in the United States” Prepared for: Dr. Tom Hinch Reviewed by: Tim Enger 0845772 Due Date: December 10, 2005 Word Count: 6,677 forms -> Steven m. Glassman forms -> Teresa k. Blodgett forms -> Atlanta Falcons Internet Scavenger Hunt forms -> Registration information forms -> Chapter 8 seaman to admiral-21 (sta-21) program Download 7.78 Mb. Share with your friends:
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