reflection in y = x
What reflection in y = x means in Mathematics A-Level, as defined for WJEC.
Definitions of reflection in y = x
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Reference: WJEC
The graph of y = f⁻¹(x) is the reflection of y = f(x) in the line y = x, and points of intersection between a function and its inverse lie along y = x.
The graph of y = ln x is the reflection of the graph of y = eˣ in the diagonal line of symmetry y = x.
Topics that use reflection in y = x
- Algebra and Functions (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
- Exponentials and logarithms (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
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- inverse functions
- algebraic division
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- combining logarithms
- equating coefficients
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