The Adams-Bashforth method is a family of explicit numerical techniques used to solve ordinary differential equations (ODEs). It is based on the idea of using previous values of the solution to predict future values, making it particularly useful for initial value problems. The method utilizes a finite difference approximation of the integral of the derivative, leading to a multistep approach.
The general formula for the -step Adams-Bashforth method can be expressed as:
where is the step size, represents the derivative function, and are the coefficients that depend on the specific Adams-Bashforth variant being used. Common variants include the first-order (Euler's method) and second-order methods, each providing different levels of accuracy and computational efficiency. This method is particularly advantageous for problems where the derivative can be computed easily and is continuous.
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