One purpose of microeconomics is to analyze market mechanisms which determine the price comparison of products and services. And the allocation of limited resources available for use in various alternative microeconomic studies on the failure of the market. This is a situation that could cause actual results to market effectively. It also describes the theoretical conditions necessary to achieve a perfect match. An important branch of microeconomics As a general equilibrium Market under asymmetric information. Decision making under uncertainty. And the application of game theory in economics.