AUBREY MCMILLAN
WW
Prob
Lib1
Sample WeBWorK problems.
WeBWorK assignment DELA
3
5 due 2/21/08 at 11:59 PM.
1.
(1 pt)
Which of the following are vectors in
R
2
?
•
A. (1,0,0)
•
B. (1,0)
•
C.
x
2
•
D.
x
•
E. 1
•
F. (0,1)
•
G. None of the above
Which of the following is the zero vector in
R
2
?
•
A. 0
•
B. (0,0,0)
•
C. (0,0)
•
D. None of the above
Which pairs below consist of a vector in
R
2
with its inverse?
•
•
•
•
•
•
•
2.
(1 pt)
Which of the following are vectors in
R
3
?
•
•
•
•
•
•
•
•
H. (0,0,1)
•
I. (3,3)
•
J.
x
Which of the following is the zero vector in
R
3
?
•
A. (0,0,0)
•
B. (0,0)
•
C. 0
•
D. None of the above
Which pairs below consist of a vector in
R
3
with its inverse?
•
•
•
•
•
•
•
•
H. None of the above
3.
(1 pt)
Which of the following are vectors in
R
4
?
•
A. (1,0,0,0)
•
B.
x
•
C.
x
4
•
D. (4,4,4,4)
•
E. (1,0,0)
•
F. 4
•
G. (4,4,4)
•
H. (4,4)
•
I. (0,1,0,0)
•
J.
R
4
has no vectors. There are only three dimensions.
Which of the following is the zero vector in
R
4
?
•
A. (0,0,0,0)
•
B. (0,0,0)
•
C. 0
•
D. 4
•
E. (0,0)
•
F. None of the above.
Which pairs below consist of a vector in
R
4
with its inverse?
•
•
•
•
•
•
•
•
H.
x
4
,

x
4
•
I. 4,4
4.
(1 pt)
Which of the following are vectors in
M
31
?
•
•
•
•
1
0
0
0
1
0
0
0
1
•
•
•
•
H.
1
2
3
•
I. (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,2
Which of the following is the zero vector in
M
31
?
1
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•
A.
0
0
•
B.
0
0
0
•
C.
0
0
0
0
0
0
0
0
0
•
D. 0
•
E.
(
0
0
0
)
•
F. (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)
•
G. None of the above
Which pairs below consist of a vector in
M
31
with its inverse?
•
•
•
1
2
3
,
1
1
/
2
1
/
3
•
1
1
0
0
2
5
0
0
4
,
1

1
/
2
5
/
8
0
1
/
2

5
/
8
0
0
1
/
4
•
•
•
H.
(
1
2
3
)
,
(
1
1
/
2
1
/
3
)
•
I.
1
2
3
,

1

2

3
•
J.
3
1
,

3

1
5.
(1 pt)
Which of the following are vectors in
M
23
?
•
A.
0
2
3
2
3
0
•
B.
t
23
•
C.
(
1
0
0
)
•
D.
1
0
0
1
•
E.
t
•
F.
2
3
2
3
2
3
•
G.
3
1
•
H.
1
0
0
0
1
0
0
0
1
•
I. 23
•
J.
1
0
0
1
0
0
•
K. (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23)
•
L.
(
1
2
3
)
•
M. None of the above
Which of the following is the zero vector in
M
23
?
•
A. 0
•
B.
0
0
0
0
0
0
0
0
0
•
C.
0
0
•
D. (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)
•
E.
0
0
0
0
0
0
•
F.
(
0
0
0
)
•
G.
0
0
0
0
•
H.
0
0
0
•
I.
0
0
0
0
0
0
•
J. None of the above
Which pairs below consist of a vector in
M
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 Winter '08
 GarciaCerver
 Math, Differential Equations, The Distributive Property, Addition, Equations, Vectors, Vector Space, A.

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