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How I can create this matrix?

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Accepted Answer

Rik
Rik on 5 Aug 2021
A simple loop with indexing will do the trick. But in this case you can also use the normal matrix multiplication
A=[1 3 0;2 3 3;2 2 5;3 1 6;4 0 4];
B=[1 5 6 2 6 4;3 6 7 4 7 5;5 3 8 5 8 3;5 2 9 6 3 7;6 6 3 2 1 3];
for k=1:size(A,2)
C(:,k)=sum(A(:,k).*B);
end
C
C = 6×3
56 27 88 53 41 69 75 64 127 46 34 81 49 58 83 53 40 84
((A.')*B).'
ans = 6×3
56 27 88 53 41 69 75 64 127 46 34 81 49 58 83 53 40 84

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