新西兰毕业论文代写：完全竞争市场
在完全竞争的市场中，如果公司没有进入或离开的动机，这个市场就取决于公司。就好像公司要长期或短期经营一样。完全竞争市场中的价格=边际收益=价格。该公司的会计利润将是积极的，因为该公司决定离开市场。其原因是产品的边际价格等于产品的价格。每一个完全竞争的公司都是一个价格，这意味着它不会影响产品的价格。因此，如果任何公司没有进入或离开这个市场的动机，会计利润就不会是负面的。经济利润等于总收入减去总机会成本。
经济利润=总收入-总机会成本
由于市场的内部成本难以与发电收入相结合，因此经济利润将是负的。产品价格不会改变，机会成本也不会改变，但市场是竞争性的，这意味着经济利润将减少。因此，在一个没有进入市场或离开市场的公司的竞争市场中，会计利润不会是负的，而经济利润将是负的。
假设阿德莱德的鱼市场是一个完全竞争的市场。政府向渔业公司征收新的年费，以帮助支付渔业研究费用。因此，所有鱼类公司必须向渔业部支付相同的费用（一笔）。借助图表，显示长期市场和企业均衡是如何变化的。确定市场产出和每一家公司的产出会发生什么变化。
均衡的市场价格和产业均衡水平是借助于工业供给和需求曲线决定的。随着政府对渔业公司新的年费的改变，将对长期进行一些改变。从长远来看，企业数量和规模调整。这一变化将带来经济利润，因此市场将有新进入的机会。在这种情况下，行业的供给曲线向右移动，导致市场价格的降低。在这种情况下，为了延长利润，公司改变工厂规模以增加利润。
新西兰毕业论文代写：完全竞争市场
In the perfectly competitive market, if the firm has no incentive to enter or leave this market depends on the firm. As if the firm is expected to run for long term or short term. In perfectly competitive market MR = Price (Marginal Revenue = Price). The accounting profit of the firm will be positive because the company decides to leave the market. The reason for this is the marginal price of the product equal to the price of the product. Each perfectly competitive firm is a price taken that means it will not affect the price of the product. Therefore the accounting profit will not be negative if any firm have no incentive to enter or leave this market. Economic profit equals to total revenue minus total opportunity cost.
Economic Profit = Total Revenue – Total Opportunity Cost
The economic profit will be negative because the internal costs are involved in this market which is difficult to take over with the generating revenue. The product price will not be changed and also the opportunity cost will also not change but the market is competitive, this means the economic profit will reduce. Therefore in the competitive market for a company that have no incentive to enter or leave the market, the accounting profit will not be in negative but economic profit will be in negative.
Suppose that the market for fish in Adelaide is a perfectly competitive market. The government introduces a new annual fee for fish firms to help pay for fisheries research. Accordingly, all fish firms must pay the same fee (lump-sum) to the fisheries department. With the help of a diagram, show how the long-run market and firm equilibria change. Identify what happens to the market output as well as the output of each firm.
The equilibrium market price and industry equilibrium level of output are determined with help of industry supply and demand curves. With the change in the new annual fee for fish firms by the government will make some changes for the longer term. In the long run the number of firms, and size adjust. This change will lead to economic profits and therefore there will be chances of new entry in the market. The industry supply curve in this situation shifts rightward and leads to reduction in the market price. In this circumstances for longer run, the firm changes their plant size to increase the profits.
