Using only matrix operations. For full credit you must minimize the number of operations.

Create a $4$x$3$ random matrix A$.$ Do NOT use the randi$()$ function...use rand$().$

Get those elements of A that are located in rows $3$ to $4$ and columns $2$ to $3$ and create matrix B from

those elements.

Add a fourth column to A and set it equal to the first column of A$.$

Replace the last $3$x$3$ submatrix of A $($rows $2$ to $4,$ columns $2$ to $4)$ with a $3$x$3$ identity matrix.

Delete the first and third rows of A$.$

Round off all entries of A