overestimate and underestimate
What overestimate and underestimate means in Mathematics A-Level, as defined for WJEC.
Definition of overestimate and underestimate
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Reference: WJEC
Where the curve is convex the straight chords lie above the curve, so the rule overestimates; where concave the chords lie below, so it underestimates.
Topics that use overestimate and underestimate
- Numerical Methods (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- bounds for the true integral
- cobweb diagram
- contextual problem solving
- divergence
- failure of sign change
- fixed-point iteration
- Intermediate value theorem
- Newton-Raphson method
Using overestimate and underestimate in the exam
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