2/6/13

Fourier transform - sawtooth waveform

maxima maxima_fourier-transform-periodic-sawtooth

Fourier transform:

    integrate(h(x)*exp(-%i*2*%pi*(y*x)),x,-inf,inf);
    

sawtooth waveform:

    h(x):=-2*(sum((-1)^n*sin(%pi*n*x)/n,n,1,10))/%pi;
    

Example:

    h(x):=-2*(sum((-1)^n*sin(%pi*n*x)/n,n,1,10))/%pi;
    integrate(h(x)*exp(-(x^2)*0.1)*exp(-%i*2*%pi*(y*x)),x,-inf,inf);
    cabs(%);
    plot2d(%, [y,-10,10]);
    

maxima maxima_fourier-transform-periodic-sawtooth