Matrix Dimensions must agree

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Dion Akmal
Dion Akmal on 24 Mar 2021
Commented: Dion Akmal on 24 Mar 2021
please help me im new at using MATLAB
here is my code
f = 0.05:0.05:0.4;
t = 0:0.01:20;
g = dot(cos(2*pi.*f.*t),sin(2*pi.*f.*t));
and the error is
Matrix dimensions must agree.
g = dot(cos(2*pi.*f.*t),sin(2*pi.*f.*t));

Answers (1)

Jan
Jan on 24 Mar 2021
Edited: Jan on 24 Mar 2021
f and t have a different number of elements. Then f .* t is not defined.
You did not tell us, what you want to achieve, but perhaps transposing one of the vectors will do what you want:
g = dot(cos(2*pi * f .* t.'), sin(2 * pi * f .* t.'));
% ^^ ^^
Try this:
x = 1:3
y = 4:7
x .* y % error
x .* y.' % matrix
  1 Comment
Dion Akmal
Dion Akmal on 24 Mar 2021
can you help me sir, in my code f is scalar

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