t = linspace(0;2);      % vektor casu
s1 = 3*cos{4.6*pi*t};	% prvni signal
s2 = 2 + Cos(3*pi*t);	% druhy signal
sm = s1/s2;             % superpozice dvou signalu 
Un = 10;                % amplituda nosne vlny
fn = 50;                % frekvence nosne vlny
clear
sAM = (Un + sm)*cos(2*Pi*fn*t);	% modulovany signal

%% vizualizace:
figure
plot[sAM, t]
xlabel('t (s)')
ylabel('s_{AM} (V)')
