??? Error using ==> mldivide Matrix dimensions must agree.

Hi everyone, I am trying to divide f0 but it keeps coming up with errors. I tried putting the dot before / as seen below but it is still not working. Am i missing something really simple? Thanks

c = 341; % speed of sound in air

%%% GF as function of Frequency PARAMETERS %%%

f01 = 50:50:500;

x2 = lx; %% far

y2 = ly;

z2 = lz;

% 1 fixed frequency <<

%%Calculated Parameters%%

w= 2 *pi *f01 ; %%angular frequency

lambda = c./f01 ;%%wavelength

k. = (2*pi)./lambda

[abhijit kulkarni]

1) You have not defined varaible lx,ly lz.

put some value (ex. numeric value )

2) remove dot from k.

c = 341; % speed of sound in air

%%% GF as function of Frequency PARAMETERS %%%

f01 = 50:50:500;

% x2 = lx; %% far % % y2 = ly; % % z2 = lz; x2 = 1; %% far

y2 = 2;

z2 = 2; % 1 fixed frequency <<

%%Calculated Parameters%%

w= 2 *pi *f01 ; %%angular frequency

lambda = c./f01 ;%%wavelength

k = (2*pi)./lambda

you should get answer

Answer 1

[Star Strider]

The dot (vectorising) is a good idea, unless you’re doing true matrix or vector operations. Then it leads to strange results.

These lines:

c = 341;
f01 = 50:50:500;
lambda = c./f01
k = (2*pi)./lambda  <+++ this line works when you remove the dot after the k

produce decent-looking vectors for lambda and k. I only see f01, not f0, so I assume we’re looking at the correct section of code.

But then f0 (that does not appear) could be a boson or some other elemental quantity that refuses to be divided further.