Type this array into a MATLAB Script File to carry out the following instructions:

$=[$

$123$

$456$

$789$

$]$

a$)$ Use MATLAB to create a row vector $$ by extracting the elements from the second row

of array $.$

b$)$ Use MATLAB to create a column vector $$ by extracting the elements from the third

column of array $.$

c$)$ Use MATLAB using the cross product to create the vector $=\backslash$times $.$

d$)$ Use MATLAB to create the vector $=+.$