maxima_fourier-transform
Fourier transform
Example:
integrate(h(x)*exp(-%i*2*%pi*(y*x)),x,-inf,inf);
h(x):=exp(-(x^2)*0.1)*(cos(2*%pi*3*x)*cos(2*%pi*5*x)); integrate(h(x)*exp(-%i*2*%pi*(y*x)),x,-inf,inf); realpart(%); plot2d(%, [y,-10,10]);
