peanut oil vs vegetable oil Suppose a speculator decides to enter the foreign exchange futures market. He is going to take out $10,000 to speculate. He selected the broker bank and registered representative, opened an account, and deposited the money. To be on the safe side, he decided to do sterling business first and then gain some experience before entering other markets. China giant core technology benefits electronic material localization At present, countries around the world is frequent use of interest rate leverage to implement macro-control, interest rate policy has become a central bank to control money supply and demand, and a major means of regulating economic, interest rate policy in the position in the central bank's monetary policy more and more important. Flash memory and DRAM demand growth over the long term It is not obvious in some analyses, but it is important to note that economic profits include opportunity costs. The profit of an entrepreneur (normal profit) is usually positive, but economic profit can be either positive or negative (loss). That's why the opportunity cost is included: in a completely competitive market, when marginal cost equals marginal revenue, profit maximization or loss minimization conditions arise. If the market price is lower than the total average cost, which means that the economic profit is negative, the entrepreneur needs to compare the value of the loss and the average variable cost. If the business continues to operate, the negative economic profit must not be lower than the average variable cost, otherwise the entrepreneur would rather shut down the company than continue to take the loss.