1.
Which product is not defined?
A.
[11 4 -3]
B.
C.
D.
[16 12 5]
Hint
2.
Find the dimensions of
A
6 × 3
·
B
3 × 1
.
A.
6 × 3
B.
6 × 1
C.
3 × 1
D.
3 × 3
Hint
3.
Find
A.
B.
C.
D.
Hint
4.
Which of the following is true concerning matrix multiplication of three matrices
A
,
B
, and
C
?
A.
AB
=
BA
for all cases
B.
C
(
A
+
B
) =
CA
+
CB
C.
(
A
+
B
)
C
=
CA
+
CB
D.
AB
=
BA
for no cases
Hint
5.
Given that
and
use the fact that
to find
AB
+
AC
.
A.
B.
C.
D.
Hint