Mathematics A-Level
Sign-change location
What Sign-change location means in Mathematics A-Level, as defined for Pearson Edexcel.
Definition of Sign-change location
Check what you remember
Read the wording for your board, then hide it and explain Sign-change location in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
Evaluating a function at successive values to locate a sign change, giving an interval containing the root.
Topics that use Sign-change location
- Numerical methods (Pearson Edexcel A-Level)
Related terms
- Bisection and interval narrowing
- change of sign
- Cobweb and staircase diagrams
- cobweb diagram
- Concave up
- Convergence
- Convergence and the gradient condition
- divergence
Using Sign-change location in the exam
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