Compute two matices without using the matrix multiplication
显示 更早的评论
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
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
Mrutyunjaya Hiremath
2020-4-25
error("Matrix multiplication is not possible.");
Should be like this, if I am not wrong
error('Matrix multiplication is not possible.');
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
Mrutyunjaya Hiremath
2020-4-25
Ok got it. :)
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