t_fine = linspace(0, 10, 100000); % Núna eru 100000 stök milli 0 og 1

v_fine = sin(2*pi * 0.2 * t_fine);
w_fine = sin(2*pi * 0.2 *  t_fine + (2*pi*1/3)); % + 1/3 hringur
u_fine = sin(2*pi * 0.2 *  t_fine + (2*pi*2/3)); % + 2/3 hringur

subplot(3,1,2);
% plot(x,y)         % líka haegt: plot(x,y1,x,y2,x,y3)
plot(t_fine,v_fine);
hold on;
plot(t_fine,u_fine);
hold on;
plot(t_fine,w_fine)
hold off;

xlabel("Timi")
ylabel("Utslag")
title("Finar sinusbylgjur, þriggja fasa")
axis([0 10 -1.5 1.5])  % axis([x_low x_high y_low y_high])
legend('0 fasahliðrun','1/3 fasahliðrun','2/3 fasahliðrun')