MATLAB: How To Calculate Double Summation In Matlb

double summation

Hey there,
I am trying to calculate C, as A=[1 2 3]; B=[1 2 3;4 5 6;7 8 9]; n=3
C=Sigma(i=1 to 3)Sigma(j=1 to3 )A(i)B (i,j)A(j)
Tell me Matlab code to calculate C. Thanks in advance

Best Answer

A=[1 2 3];
B=[1 2 3;4 5 6;7 8 9];
s=bsxfun(@times,bsxfun(@times, B,A),A');
s=sum(s(:))
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