True or False? In Exercises 49 and 50, determine whether each statement is true or false. If a statement is true, give a reason or cite an appropriate statement from the text. If a statement is false, provide an example that shows the statement is not true in all cases or cite an appropriate statement from the text. (a) A vector space consists of four entities: a set of vectors , a set of scalars, and two operations. (b) The set of all integers with the standard operations is a vector space. (c) The set of all ordered triples ( x , y , z ) of real numbers, where y ≥ 0 , with the standard operations on R 3 is a vector space.
True or False? In Exercises 49 and 50, determine whether each statement is true or false. If a statement is true, give a reason or cite an appropriate statement from the text. If a statement is false, provide an example that shows the statement is not true in all cases or cite an appropriate statement from the text. (a) A vector space consists of four entities: a set of vectors , a set of scalars, and two operations. (b) The set of all integers with the standard operations is a vector space. (c) The set of all ordered triples ( x , y , z ) of real numbers, where y ≥ 0 , with the standard operations on R 3 is a vector space.
True or False? In Exercises 49 and 50, determine whether each statement is true or false. If a statement is true, give a reason or cite an appropriate statement from the text. If a statement is false, provide an example that shows the statement is not true in all cases or cite an appropriate statement from the text.
(a) A vector space consists of four entities: a set of vectors, a set of scalars, and two operations. (b) The set of all integers with the standard operations is a vector space.
(c) The set of all ordered triples
(
x
,
y
,
z
)
of real numbers, where
y
≥
0
, with the standard operations on
R
3
is a vector space.
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
Let A = [[3,1,1,2,2],[-3,-2,4,2,2],[-5,5,4,-1,-2]] Give a nonzero vector x in the nullspace of A.
Determine which sets are dependent.
Write each vector as a linear combination of the vectors in S. (If not possible, enter IMPOSSIBLE.)
S = {(6, 7, 8, 6), (4, 6, −4, 1)}
(a) U = (26, 55, 40, 2)
U=
+
(b) v = (43, 113,
(43,
113, -18, 13)
V =
1 +
$2
(c)
w = (-4, -14, 29, 51)
W =
1 +
(d) z = (12,-6, 9,
z =
9, 39)
.
1 +
52
Chapter 4 Solutions
Bundle: Elementary Linear Algebra, Loose-leaf Version, 8th + MindTap Math, 1 term (6 months) Printed Access Card
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