Mathematics A-Level
interval additivity
What interval additivity means in Mathematics A-Level, as defined for WJEC.
Definition of interval additivity
Check what you remember
Read the wording for your board, then hide it and explain interval additivity in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: WJEC
The property that the integral from a to c equals the integral from a to b plus the integral from b to c for any intermediate b.
Topics that use interval additivity
- Integration (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
- Antiderivative
- Area under a curve
- constant of integration
- definite integration
- evaluation of integrals
- Fundamental Theorem of Calculus
- limits of integration
- x-intercepts
Using interval additivity in the exam
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