t=0:0.01:8;

w=1;

y=1-((exp(-0.6*w*t))/(sqrt(1-0.6^2)))*sin(w.*sqrt(1-0.6^2)+acos(0.6));

plot(t,y);

hold on;

w=5;

y=1-((exp(-0.6*w*t))/(sqrt(1-0.6^2)))*sin(w.*sqrt(1-0.6^2)+acos(0.6));

plot(t,y)

but every time I´ll run it I get the following message:

??? Error using ==> mtimes

Inner matrix dimensions must agree.

Error in ==> Analytiskt_w0_w5 at 3

y=1-((exp(-0.6*ω*t))/(sqrt(1-0.6^2)))*sin(ω.*t.*sqrt(1-0.6^2)+acos(0.6));

I don´t see where I do wrong

Any help is appreciated