ASN2 - Something Interesting: Exponential

Fourier Series

$x(t)=\sum _{n=0}^{\mathrm{\infty }}{a}_{n}cos((2\pi mt)/t)$

$\frac{2}{T}\sum _{n=1}^{\mathrm{\infty }}sin\left(\frac{2\pi nt}{T}\right)$