cobweb diagram
What cobweb diagram means in Mathematics A-Level, as defined for Pearson Edexcel, WJEC.
Definitions of cobweb diagram
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Reference: WJEC
An iterative path where iterations alternate above and below the root, producing an inward spiralling diagram when the gradient is negative (−1 < g'(α) < 0).
A graphical representation of fixed-point iteration in which successive steps typically alternate around a fixed point, producing a web-like route between \(y=g(x)\) and \(y=x\).
Topics that use cobweb diagram
- Numerical methods (Pearson Edexcel A-Level)
- Numerical Methods (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- divergence
- fixed-point iteration
- Newton-Raphson method
- staircase diagram
- Trapezium rule
- Bisection and interval narrowing
- bounds for the true integral
- change of sign
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