Question $2[6$ marks$]$

The matrix A and $B$ are given as

$A=\left[\begin{array}{cc}3& 10\\ 5& 6\end{array}\right]$

and

and $=\left[\begin{array}{ccc}1& 2& 3\\ 4& 0& 2\\ 6& 8& 9\end{array}\right]$

What are the outputs of the following MATLAB$/$OCTAVE commands?

a$)$ A$.*$B $(2$:$3,1$:$2)$

b$)$

e$)A($:$,1)+B(2$:$3,3)$

c$){\displaystyle \underset{?}{\overset{?}{}}}(B(1$:$2,$:$))$