critical values
What critical values means in Mathematics A-Level, as defined for AQA, WJEC.
Definitions of critical values
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Reference: AQA
Values found for a quadratic inequality after rearranging to make one side zero, used with a sketch of the parabola to identify the correct regions.
Found by solving ax² + bx + c = 0, then used to sketch the parabola and identify the required region.
Topics that use critical values
- B: Algebra and functions (AQA A-Level)
- Algebra and Functions (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
- Asymptotes
- Completing the square
- direct proportion
- Discriminant
- Factor theorem
- Graph transformations
- graphical intersections
- inverse proportion
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