![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/1/12/Periodic_function_illustration.svg/640px-Periodic_function_illustration.svg.png&w=640&q=50)
Periodic function
Function that repeats its values at regular intervals or periods / From Wikipedia, the free encyclopedia
Not to be confused with periodic mapping.
"Period length" redirects here. Not to be confused with repeating decimal.
"Aperiodic" and "Non-periodic" redirect here. For other uses, see Aperiodic (disambiguation).
A periodic function or cyclic function, also called a periodic waveform (or simply periodic wave), is a function that repeats its values at regular intervals or periods. The repeatable part of the function or waveform is called a cycle.[1] For example, the trigonometric functions, which repeat at intervals of radians, are periodic functions. Periodic functions are used throughout science to describe oscillations, waves, and other phenomena that exhibit periodicity. Any function that is not periodic is called aperiodic.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/1/12/Periodic_function_illustration.svg/640px-Periodic_function_illustration.svg.png)