# Periodic function

# Periodic Functions

We say a function is -periodic if and only if .

Simple examples of periodic functions include familiar -periodic functions from trigonometry

.

where is the angular frequency and is time.

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We say a function $f(t)$ is $T$-periodic if and only if $f(t+T)=f(t)$.

Simple examples of periodic functions include familiar $2\pi$-periodic functions from trigonometry

.

where $\omega$ is the angular frequency and $t$ is time.

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- This page was last edited on 2 November 2016, at 14:35.
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