Exponential function

Definition

A function in which the variable appears as a power, such as $y=k^x$ , where the base $k$ is a positive constant.

Used by AQA, Edexcel and OCR

Specification A12 · Paper 1, Paper 2, Paper 3

Specification A12 · Paper 1, Paper 2, Paper 3

A function in which the variable appears as an exponent; for example, $y=k^x$ for a positive constant .

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Specification 7.01b, 7.01d · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)

A function in which the variable is an exponent, such as $y=3\times1.1^x$ .
In an exponential function the variable is in the exponent.
Revise: Plotting Graphs
A function whose output is a positive constant base raised to a variable power, such as $y=k^x$ with $k>0$ .
Revise: Exponential Graphs