One of the concrete methods of economic activity analysis by mathematical analysis method is the practical application of mathematical analysis method in economic activity analysis. It mainly includes: volume cost-benefit analysis, correlation analysis, regression analysis, linear programming and input-output method. This method is mainly used for factor analysis and prediction analysis. Trend analysis, decision analysis, scheme optimization, benefit evaluation, etc.
Each decision analysis method has its specific content. The basic contents of mathematical analysis methods are mathematization, modeling and computerization. From a mathematical point of view, many practical means have been found in mathematics, such as linear programming, integer programming, dynamic programming, game theory, queuing theory, inventory model, scheduling model, probability statistics and so on. It plays an important role in promoting quantitative analysis and decision-making. From the point of view of modeling, every mathematical means contains a specific mathematical model to solve decision-making problems, and people can find the answers to the questions they need to know with the help of the model; From the point of view of computerization, people can borrow an electronic computer as a fast logical calculation tool to shorten the time to solve problems and enhance the accuracy of prediction. These "three modernizations" are interrelated, and their combination has greatly changed the technology and method of decision-making.
The central content of mathematical analysis is to establish a mathematical model that is suitable for decision-making and decision-making objectives and reflects the relationship between things. The core of this model is to express the relationship between variables by mathematical methods, and to express the relationship between variables and goals by mathematical relations. If an electronic computer is used, these mathematical models are compiled into program models in computer language, and then the program models are input into the electronic computer, and accurate data and conclusions are obtained through computer operation. At present, many commonly used mathematical analysis methods have been compiled into computer programs for decision makers to call at any time.