A complex function can be expressed as a sum of complex exponential functions, using Fourier coefficients. The real and imaginary parts of the complex exponentials give the cosine and sine terms of the Fourier series, respectively.
A complex function can be expressed as a sum of complex exponential functions, using Fourier coefficients. The real and imaginary parts of the complex exponentials give the cosine and sine terms of the Fourier series, respectively.