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    Mathematics A-Level

    convergence condition |g'(x)| < 1

    What convergence condition |g'(x)| < 1 means in Mathematics A-Level, as defined for WJEC.

    Definition of convergence condition |g'(x)| < 1

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    Reference: WJEC

    If |g'(α)| > 1 the iteration diverges away from the root, so convergence depends on the gradient of g(x) near the root.
    WJEC · Numerical Methods (A2 Unit 3: Pure Mathematics B)

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