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Which of these is used by the Adam-Bashforth method?

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Which of these is used by the Adam-Bashforth method?

(a) Newton’s method

(b) Frobenious covariant

(c) Frobenious norm

(d) Lagrange polynomial

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This interesting question is from Transient Flows in chapter Transient Flows of Computational Fluid Dynamics

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Correct answer is (d) Lagrange polynomial

Explanation: A Lagrange polynomial is used to get the polynomials at the required number of points in the Adam-Bashforth method. The order of accuracy of this method depends on the number of polynomials used.

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