Concave up
What Concave up means in Mathematics A-Level, as defined for Pearson Edexcel, WJEC.
Definitions of Concave up
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Reference: Pearson Edexcel
A curve that lies below its chords, so the rule overestimates the true area.
A curve that bends upwards; mathematically it has positive second derivative over the relevant interval.
Topics that use Concave up
- Numerical methods (Pearson Edexcel A-Level)
- Overarching themes - Mathematical problem solving (WJEC A-Level)
Related terms
- change of sign
- Convergence
- Fixed point
- Iteration
- Newton-Raphson method
- Trapezium rule
- accuracy and rounding
- algebraic modelling
Using Concave up in the exam
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