Mathematics A-Level
convex curves
What convex curves means in Mathematics A-Level, as defined for WJEC.
Definition of convex curves
Check what you remember
Read the wording for your board, then hide it and explain convex curves in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: WJEC
A curve is convex on an interval if d²y/dx² ≥ 0 everywhere on that interval, meaning the gradient is increasing and chords lie above or on the curve.
Topics that use convex curves
- 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
- differential equations formulation
- differentiation from first principles
- exponential differentiation
Using convex curves in the exam
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