3 sine waves in 1 graph, same frequency different amplitude

im trying to plot 3 sine waves in 1 graph, same frequency different amplitude. they come up separately.

i picture is below on how i would like the sine waves to look like.

thank you

[Femi Okome]

sorry about my grammer. im on 0 hours sleep. and also thank you very much. this helps a lot.

Answer 1

[Jan]

I've replaced your huge 38 MB BMP image by a 48 kB JPEG to improve the speed of loading the thread.

Which problem do you have to write the code? What does this mean: "they come up separately"?

The actual code is simple:

A = [0.2; 0.5; 1.2];  % The different amplitudes
t = linspace(0, 2*pi, 200);
plot(t, A .* sin(t))
grid on
axis tight