Mathematics A-Level
Equation in a function of the unknown
What Equation in a function of the unknown means in Mathematics A-Level, as defined for Pearson Edexcel.
Definition of Equation in a function of the unknown
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Reference: Pearson Edexcel
An equation such as x⁴ − 5x² + 4 = 0, solved by substituting a single letter for that function, solving the resulting quadratic, then reversing the substitution and checking each value.
Topics that use Equation in a function of the unknown
- Algebra and functions (Pearson Edexcel A-Level)
Related terms
- Algebraic division by linear expressions
- Amplitude
- Asymptote
- Comparing coefficients
- Completing the square
- Composite function
- Conjugate
- Discriminant
Using Equation in a function of the unknown in the exam
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