How do i plot?

Im having problem plotting the sinusoidal time signal for (5+cos(20pt))cos(2p(100)t), having Dt=0.0001s, t=0~0.02 sec.

[Aniket Patil]

Please provide good expression.

Answer 1

[Pawel Jastrzebski]

Is this what you meant?

dt = 0.0001;
t  = 0:dt:0.02;
y  = (5+cos(20*pi*t)).*cos(2*pi*100*t); 

figure;
plot(t,y);

Output:

[Wei Jun Lee]

Yes, thank you so much!