Introduction - If you have any usage issues, please Google them yourself
The difference equation is to establish the difference equation according to the law of the actual background, the nature and the balance relation, and establish the equilibrium relation equation which the discrete variable satisfies for the discrete target of the system or process. By solving and analyzing the solution of the equation, or by analyzing the special properties (balance, stability, asymptotic behavior, oscillation, periodicity, etc.) of the equation, we can grasp the law of the change process of this discrete variable, Other analysis, get the original solution