% Loesung von Aufgabe 7 t = 0:0.1:20*pi; omega1 = 1.0; omega2 = 1.2; y1 = sin(omega1*t); y2 = sin(omega2*t); y = y1 + y2; plot(t, y1, 'm-', t, y2, 'g-', t, y, 'k-')