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getting the error please help

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abed
abed on 7 Feb 2014
Closed: MATLAB Answer Bot on 20 Aug 2021
b4=0.1:0.001:1;
B=(20.*abs(b4))/3;
F1=(6/abs(b4)).*(sqrt(10^(-2)+B)+10^(-1));
F2=(6/abs(b4)).*(sqrt(10^(-4)+B)+10^(-2));
figure
plot(b4,F1,b4,F2)
xlabel('phase mismatch')
ylabel('GAIN FWM')
%%% ??? Error using ==> mldivide Matrix dimensions must agree.
Error in ==> UntitledFWM at 12 F1=(6/abs(b4)).*(sqrt(10^(-2)+B)+10^(-1));%%

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Answers (1)

Azzi Abdelmalek
Azzi Abdelmalek on 7 Feb 2014
Edited: Azzi Abdelmalek on 7 Feb 2014
Don't forget to use ./ instead of /
b4=0.1:0.001:1;
B=(20.*abs(b4))/3;
F1=(6./abs(b4)).*(sqrt(10^(-2)+B)+10^(-1));
F2=(6./abs(b4)).*(sqrt(10^(-4)+B)+10^(-2));
figure
plot(b4,F1,b4,F2)
xlabel('phase mismatch')
ylabel('GAIN FWM')
  2 Comments
abed
abed on 7 Feb 2014
thank you very much it worked when you told me wow but why??
Azzi Abdelmalek
Azzi Abdelmalek on 7 Feb 2014
for the same reason you wrote .* instead of *

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