Enter the matrices

$143$

$231$

$105$

A

$$

$=$

$$

$1$

$1$

$4$

B

$$

$=$

$$

$12$

$11$

$21$

C

$$

$=$

$$

Use these matrices for Exercises $3$ and $4.$

$4$

$3.$ On the line provided give the MATLAB command that performs the indicated action. Execute the

command to check your answer, but do not record the MATLAB output.

$($a$)$ Display the matrix C $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$($b$)$ Display the first two rows of A$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$($c$)$ Display the entries in the odd columns of A that are in the second row$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$($d$)$ Replace the sub$-$matrix, $14$

$23$

$$

$$

in A with the matrix $35$

$28$

$$

$$

$$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$