Test:
Matrices I - Ambitious
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Question 1:
Find
2
A
+
3
B
for
A
=
[
2
3
1
5
]
and
B
=
[
0
4
3
1
]
A
[
4
18
11
13
]
B
[
4
17
10
21
]
C
[
4
16
9
19
]
D
[
4
12
15
−
4
]
Question 2:
Find
1
2
A
−
1
3
B
for
A
=
[
4
2
6
8
]
and
B
=
[
9
15
12
6
]
A
[
−
2
−
5
−
3
4
]
B
[
1
−
3
−
2
4
]
C
[
2
−
1
4
−
1
]
D
[
−
1
−
4
−
1
2
]
Question 3:
Find
2
A
−
3
B
+
4
C
for
A
=
[
3
5
−
1
4
]
,
B
=
[
0
−
5
7
8
]
and
C
=
[
−
1
2
−
5
3
]
A
[
−
11
18
−
34
3
]
B
[
3
27
−
23
5
]
C
[
7
−
23
18
5
]
D
[
2
33
−
43
−
4
]
Question 4:
Find
A
2
for
A
=
[
2
1
3
4
]
A
[
4
1
9
16
]
B
[
4
1
9
16
]
C
[
5
3
15
16
]
D
[
7
6
18
19
]
Question 5:
Find
A
2
for
A
=
[
−
3
5
2
−
4
]
A
[
9
25
4
16
]
B
[
19
−
35
−
14
26
]
C
[
−
6
10
4
−
8
]
D
[
16
−
30
−
12
22
]
Question 6:
Find
A
B
−
B
A
,
A
=
[
3
−
1
1
4
]
,
B
=
[
2
5
−
3
6
]
A
[
−
2
27
−
7
2
]
B
[
1
30
−
4
5
]
C
[
0
0
0
0
]
D
[
−
5
24
−
10
−
1
]
Question 7:
Find
A
B
,
A
=
[
3
1
4
0
−
2
−
1
]
,
B
=
[
2
−
1
3
]
A
[
12
5
]
B
[
6
2
8
]
C
[
6
−
1
12
0
2
−
3
]
D
[
17
−
1
]
Question 8:
Find
A
B
,
A
=
[
2
−
3
1
1
4
2
]
,
B
=
[
2
−
1
−
2
4
3
7
]
A
[
13
−
7
0
29
]
B
[
4
3
−
2
16
]
C
[
7
−
1
1
34
]
D
[
11
8
5
−
4
]
Question 9:
Solve:
[
x
5
3
−
1
]
+
[
−
1
−
7
2
5
]
−
[
−
6
2
3
y
]
=
[
12
−
7
18
8
]
A
x
=
19
,
y
=
12
B
x
=
−
6
,
y
=
−
1
C
x
=
12
,
y
=
8
D
x
=
7
,
y
=
−
4
Question 10:
Solve:
[
−
2
4
3
5
]
[
x
y
]
=
[
−
5
7
]
A
{
x
=
2
13
22
y
=
−
1
22
B
{
x
=
2
7
22
y
=
−
1
22
C
{
x
=
2
9
22
y
=
1
22
D
{
x
=
2
37
66
y
=
−
1
22
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