Mathematics A-Level
rational exponents
What rational exponents means in Mathematics A-Level, as defined for WJEC.
Definition of rational exponents
Check what you remember
Read the wording for your board, then hide it and explain rational exponents in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: WJEC
Surds and reciprocals are converted into this form: 1/x³ = x⁻³ and ᵌ√x = x^(1/3).
Topics that use rational exponents
- Differentiation (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
- algebraic preparation
- Derivative
- derivative sign analysis
- differentiation from first principles
- linear operator
- Normal
- second derivative
- sketching gradient functions
Using rational exponents in the exam
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