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Error using * Inner matrix dimensions must agree

I'm trying to calculate some functions in matlab and I'm getting this error:

Error using  * 
Inner matrix dimensions must agree.

Error in set1 (line 11)
x = (Ac + m)*cos(2*pi*fc*t);

but I don't use any kind of matrix in my code. What is the problem about?

Here is my code:

fs = 10000;
Ts = 1/fs;
t = (0:Ts:10);
m = cos(2*pi*t);
plot(t,m);
figure;

Ac = 2;
fc = 500;
x = (Ac + m)*cos(2*pi*fc*t);
plot(t,x);
figure;
Solution

  • Try elementwise multiplication by adding a dot before *:

    x = (Ac + m).*cos(2*pi*fc*t);