Determine whether each vector is a scalar multiple of
z
=
(
3
,
2
,
−
5
)
.
(a)
v
=
(
9
2
,
3
,
−
15
2
)
(b)
w
=
(
9
,
−
6
,
−
15
)
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.
Determine the vector 8a – 7b if a = -3i + 2j – 4k and b = 5i + 6j + 2k.
8a – 7b =
help (vectors)
Let u = (1, 2, 3), v = (2, 2, -1), and w = (4, 0, -4). Find 2u + 3v - w.
STEP 1: Multiply each vector by a scalar.
2u =
3v =
-W =
STEP 2: Add the results from Step 1.
2u + 3v - w =
X
Write v as the sum of two vector components if v = i + 3j and w = 2i+j.
O v = (-2i+2j) + (i + j)
O v = (-i+j) + (-2i+2j)
O v= (-i+2j) + (i + 2j)
O v= (2i+j) + (-i + 2j)
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Chapter 4 Solutions
Bundle: Elementary Linear Algebra, Loose-leaf Version, 8th + MindTap Math, 1 term (6 months) Printed Access Card
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