Mathematics A-Level
Cobweb and staircase diagrams
What Cobweb and staircase diagrams means in Mathematics A-Level, as defined for Pearson Edexcel.
Definition of Cobweb and staircase diagrams
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Reference: Pearson Edexcel
A cobweb diagram plots the iteration against the line y = x, spiralling inwards for oscillating convergence, while a staircase diagram shows a monotonic approach stepping in one direction towards the intersection.
Topics that use Cobweb and staircase diagrams
- Numerical methods (Pearson Edexcel A-Level)
Related terms
- Bisection and interval narrowing
- change of sign
- cobweb diagram
- Concave up
- Convergence
- Convergence and the gradient condition
- divergence
- Failure cases of numerical methods
Using Cobweb and staircase diagrams in the exam
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