Part

$2$

$$Exercises

Recall that a

$=$

$$last digit of your student ID

$,$

$$b

$=$

$$second to last digit of your

student ID

$,$

$$c

$=$

$$third to last digit of your student ID

$,$

$$and d

$=$

$$the sum of the

last three digits of your student ID

$.$

$$Complete the following operations in your script, making a new line for each operation.

$2$

A

$)$

$$Define the matrices M

$1$

$,$

$$M

$2$

$,$

$$M

$3$

$,$

$$and M

$4$

$$in different lines in your script so that they output the following matrices below

$($

the semicolons are important; include them!

$)$

$.$

$$You will be using these to answer the questions that follow them.

$2$

B

$)$

$$P

$2$

B

$=$

$81$

M

$2$

$-$

$4$

M

$2$

$2$

C

$)$

$$P

$2$

C

$=$

$-$

$3$

M

$4$

$+$

$732$

$2$

D

$)$

$$P

$2$

D

$=$

$($

SM

$2$

M

$3)($

M

$13)$

$\%$

$$matrix multiply in parentheses, elementwise

multiply between parentheses

$2$

E

$)$

$$P

$2$

E

$=$

$(6$

M

$4$

M

$3)/($

M

$33)$

$\%$

$$matrix multiply in first parentheses,

elementwise otherwise