Mathematics A-Level
failure of sign change
What failure of sign change means in Mathematics A-Level, as defined for WJEC.
Definition of failure of sign change
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Reference: WJEC
Change of sign methods can fail through a discontinuity or vertical asymptote, or through an even number of roots in the interval.
Topics that use failure of sign change
- Numerical Methods (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- bounds for the true integral
- cobweb diagram
- contextual problem solving
- divergence
- fixed-point iteration
- Intermediate value theorem
- Newton-Raphson method
- overestimate and underestimate
Using failure of sign change in the exam
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