1.
A.
B.
C.
D.
Hint
2.
If
A
=
, find -2
A
.
A.
B.
C.
D.
Hint
3.
A.
The product doesn't exist.
B.
C.
D.
Hint
4.
Find the values of
x
and
y
for which the matrix equation is true.
A.
x
= 1,
y = 0
B.
x
= 2,
y
= 3
C.
x
= 4,
y
= 2
D.
x
= 3,
y
= 2
Hint
5.
A.
[4 5 6]
B.
[-1 1 18]
C.
D.
impossible
Hint
