Periodic Function

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A Periodic Function is a real-valued function that repeats over a finite interval or time period.



References

2015

1999

[math]\displaystyle{ f(x)=f(x+np) }[/math]
for [math]\displaystyle{ n=1, 2, \dots }[/math] For example, the sine function sinx, illustrated above, is periodic with least period (often simply called "the" period) [math]\displaystyle{ 2\pi }[/math] (as well as with period [math]\displaystyle{ -2\pi, 4\pi, 6\pi, }[/math] etc.).