Matrix Multiplication

My Sol

Let C be the matrix product $C=AB$ of a $mn$ matrix A and $pq$ matrix $B,$ where $n=p,$ with entries

$C_{ij}={\displaystyle \underset{k=1}{\overset{n}{}}}{A}_{ik}{B}_{kj}$

for $i=1,2,$dots,$m$ and $j=1,2,$dots,$q.$

Define a function named matrixMultiply $()$ which takes as input:

A$,$ a m $n$ double array

B$,$ a $pq$ double array

and returns as output $C,$ which should be:

an array equal to the matrix product of A and $B$ if the dimensions of A and $B$ are consistent

or a string "Incorrect dimensions for matrix multiplication." Note that string in MATLAB should use double quotation marks $($single quotation marks result in class char$).$

Do not use MATLAB's built$-$in matrix multiplication functionality and instead compute the matrix product with for loops.

Example: