How can I solve such questions in matlab (fix the error)

t = 0 : 0.0001 : 0.1
fc = 1000;
fo = 50;
fmax = 100;

I have range of |f| as [950, 1050].

And its used in this formula

x = ((f - 50)/2*50) + 1/2

and this is further multiplied with this curve

m = 300*cos(60*pi*t) + 5*cos(160*pi*t);
v = m.*cos(fc*t);
vsb = v.*x;

and then i plot it like this

plot(t, vsb);

but in this i get the error as

`Arrays have incompatible sizes for this operation.`

for this part

vsb = v.*x

Answer 1

[Voss]

f is a different size than t, so x is a different size than v. Define t and f to be the same size and it'll work. Here, I calculate f from t (and fc, fo) - not that this is the right way to do it, just to illustrate the point:

t = 0 : 0.0001 : 0.1;
fc = 1000;
fo = 50;

f = linspace(fc-fo,fc+fo,numel(t));

fmax = 100;
x = ((f - 50)/2*50) + 1/2;
m = 300*cos(60*pi*t) + 5*cos(160*pi*t);
v = m.*cos(fc*t);
vsb = v.*x;
plot(t, vsb);

[Pragyan Yadav]

thanks, i was looking for this only

[Voss]

You're welcome!