Definite integral
What Definite integral means in Mathematics A-Level, as defined for AQA, Pearson Edexcel, WJEC.
Definitions of Definite integral
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Reference: WJEC
Used to find the area between two curves by integrating the difference between the upper curve and the lower curve across an interval [a, b].
Defined as the limit of a sum of areas of rectangles for a function on an interval, written with the notation from an elongated S for sum.
Evaluated by finding an antiderivative and subtracting its value at the lower limit from its value at the upper limit.
Topics that use Definite integral
- H: Integration (AQA A-Level)
- Integration (Pearson Edexcel A-Level)
- Integration (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- Area between curves
- Integration by parts
- Integration by substitution
- Antiderivative
- Area under a curve
- Fundamental Theorem of Calculus
- limit of a sum
- separable variables
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