# Amplitude of a Sinusoidal Function

## Amplitude of a Sinusoidal Function

In a sinusoidal function defined in its parametric form, which is $$f(x)=a·\sin (b(x-h))+k$$, the amplitude A of the function is provided by the absolute value of the parameter a : A = |a|.

### Examples

In this graph, the function defined by f(x) = 2 sin(x) has an amplitude of 2.