<P> In mathematics, a periodic function is a function that repeats its values in regular intervals or periods . The most important examples are the trigonometric functions, which repeat over intervals of 2π radians . Periodic functions are used throughout science to describe oscillations, waves, and other phenomena that exhibit periodicity . Any function which is not periodic is called aperiodic . </P> <P> A function f is said to be periodic with period P (P being a nonzero constant) if we have </P>

This is a type of motion that has a basic pattern which is repeated at regular intervals