16. Error Analysis in Numerical ODE Solutions
Adams-Moulton methods are implicit multistep techniques used for numerically solving ordinary differential equations (ODEs), notable for their enhanced accuracy and stability. These methods work in tandem with Adams-Bashforth methods in predictor-corrector schemes, facilitating improved performance for various types of ODEs. The chapter covers the derivations, common formulas, advantages, disadvantages, and an algorithmic approach, emphasizing the need for an initial predictive step from an explicit method.
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What we have learnt
- Adams-Moulton methods are used for solving ordinary differential equations (ODEs) numerically.
- They provide better accuracy and stability compared to explicit methods.
- These methods require the initial values to be computed from another method, typically a one-step method.
Key Concepts
- -- AdamsMoulton Method
- An implicit multistep method for approximating solutions to ordinary differential equations.
- -- Implicit Method
- Methods that require solving equations at each time step, where the future value is on both sides of the equation.
- -- PredictorCorrector Approach
- A numerical method that uses an explicit method to predict a solution, which is then refined by an implicit method.
- -- Trapezoidal Rule
- A specific case of the Adams-Moulton method for a single time step, providing improved accuracy.
- -- Stiff ODEs
- Ordinary differential equations that exhibit rapid variations, which often require special numerical methods to solve effectively.
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