Periodic functions are functions that repeat their values at regular intervals, known as periods. Trigonometric functions like sine and cosine are classic examples of periodic functions.
5 Must Know Facts For Your Next Test
The period of a function is the length of the interval over which the function repeats.
$\sin(x)$ and $\cos(x)$ both have a period of $2\pi$.
A function $f(x)$ is periodic if there exists a positive number $P$ such that $f(x + P) = f(x)$ for all $x$ in the domain of $f$.
The amplitude of a periodic function is half the distance between its maximum and minimum values.
Periodic functions can be represented using Fourier series, which break down any periodic function into sums of sines and cosines.