Question

Please use MATLAB to solve it.

Develop, debug, and test your own M-file to multiply
two matrices—that is, [X ] = [Y ][Z], where [Y] is m by n
and [Z] is n by p. Employ for...end loops to implement the
multiplication and include error traps to flag bad cases.

Answer 1

Matlab code with explanatory comments is given below:

function [X] = Q_mmult(Y,Z)
%Multiples two matrices Y and Z
[rY,cY]=size(Y);
[rZ,cZ]=size(Z);
if not(cY==rZ)
    error("Matrices not compatible for multiplication");
end

X=zeros(rY,cZ); %initialize matrix X of appropriate size

for row=1:rY
    for col=1:cZ
        for k=1:cY
            X(row,col)=X(row,col)+Y(row,k)*Z(k,col); %matrix multiplication formulation
        end
    end
end

end

Sample usage:

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