Mathematics A-Level
sign change of curvature
What sign change of curvature means in Mathematics A-Level, as defined for WJEC.
Definition of sign change of curvature
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Reference: WJEC
Testing the sign of f''(x) just to the left and just to the right of the candidate point; if it changes sign, the point is an inflection point.
Topics that use sign change of curvature
- Differentiation (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- algebraic simplification
- Chain rule
- compound angle expansion
- concave curves
- connected rates of change
- convex curves
- differential equations formulation
- differentiation from first principles
Using sign change of curvature in the exam
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