Mathematics A-Level
strategic substitution
What strategic substitution means in Mathematics A-Level, as defined for WJEC.
Definition of strategic substitution
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Reference: WJEC
Substituting strategic roots, values of x that make individual linear factors zero, to evaluate the unknown constants.
Topics that use strategic substitution
- Algebra and Functions (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- algebraic division
- cancelling factors
- domain restrictions
- equating coefficients
- extraneous solutions
- function modelling
- horizontal and vertical scaling
- improper fractions
Using strategic substitution in the exam
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