Compute two matices without using the matrix multiplication

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Hello, the title is the question and here is my code so far but I don't think it's right:
a=input('Enter a: ');
b=input('Enter b: ');
C=[];
for i=1:length(a)
for d=1:length(b)
C(i,d)=a(i).*b(d);
end
end

采纳的回答

Sriram Tadavarty
Sriram Tadavarty 2020-4-25
Hi Mansour,
Here is the modifications that is required for the code: (Placed a static a and b values, replace with those in your code)
a = [1 2 3; 4 5 6];
b = [1 2 3 5;6 7 8 9;10 11 12 13];
if size(a,2) ~= size(b,1)
error("Matrix multiplication is not possible.");
end
c = zeros(size(a,1),size(b,2));
for i = 1:size(a,1)
for j = 1:size(b,2)
c(i,j) = a(i,:)*b(:,j);
end
end
Hope this helps.
Regards,
Sriram
  3 个评论
Sriram Tadavarty
Sriram Tadavarty 2020-4-25
Hi,
Either way is possible. It depends on the MATLAB version you are using. From R2017a or above, strings are supported.
You can always go with character array too.
Hope this helps.
Regards,
Sriram

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