Mathematics A-Level
Power rule for rational indices
What Power rule for rational indices means in Mathematics A-Level, as defined for Pearson Edexcel.
Definition of Power rule for rational indices
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Reference: Pearson Edexcel
For a power xⁿ with rational n, the derivative is n x^(n−1), which works for positive, negative and fractional indices.
Topics that use Power rule for rational indices
- Differentiation (Pearson Edexcel A-Level)
Related terms
- Chain rule
- Composite function
- connected rates of change
- Derivative
- differentiation from first principles
- Implicit differentiation
- Increasing and decreasing functions and points of inflection
- Modelling real situations with derivatives
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