\input zb-basic
\input zb-matheduc
\iteman{ZMATH 2015d.00767}
\itemau{Hoare, Graham}
\itemti{Fourier series.}
\itemso{SYMmetryplus 56, 12 (2015).}
\itemab
From the text: Fourier series is a technique for representing any periodic (or repeating) function across the interval $(-\pi ,\pi )$ as an infinite trigonometric series. For example, consider the so-called ``square wave" function alongside its Fourier series. By adding on an additional term each time, we can see how its Fourier series starts to become a very good approximation for the square wave function. Four diagrams show the development of the Fourier series with an additional term in the series being evaluated each time.
\itemrv{~}
\itemcc{I30 N50}
\itemut{Fourier series; approximation; numerical analysis; graph of a function; trigonometric series}
\itemli{}
\end