Fourier coefficient
= Fourier coefficient
{c}
{title2=$\widehat f_n$}
For a function of period $L$, its complex Fourier coefficients are
$$
\widehat f_n=\frac1L\int_{x_0}^{x_0+L}f(x)e^{-2\pi inx/L}\,dx.
$$
= Fourier coefficient
{c}
{title2=$\widehat f_n$}
For a function of period $L$, its complex Fourier coefficients are
$$
\widehat f_n=\frac1L\int_{x_0}^{x_0+L}f(x)e^{-2\pi inx/L}\,dx.
$$