Let a 7,2,4) and b=(1, -5,-2). Find a vector that == - has length 3a+26 and a direction opposite to that of a+b. Hint: A vector whose length is L and has opposite direction to vector is: -L vis: V 0 (7,-14, 14) O (12,12,-21) (24,3,-12) 0(-9, 18, -6) (18,9, -6)

Let a 7,2,4) and b=(1, -5,-2). Find a vector that == - has length 3a+26 and a direction opposite to that of a+b. Hint: A vector whose length is L and has opposite direction to vector is: -L vis: V 0 (7,-14, 14) O (12,12,-21) (24,3,-12) 0(-9, 18, -6) (18,9, -6)

Elementary Linear Algebra (MindTap Course List)

8th Edition

ISBN:9781305658004

Author:Ron Larson

Publisher:Ron Larson

Chapter5: Inner Product Spaces

Section5.CR: Review Exercises

Problem 13CR

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Question

Let a 7,2,4) and b =(1, -5,-2). Find a vector that
=
has length 3a+26 and a direction opposite to that of
a+b.
Hint: A vector whose length is L and has opposite direction to
vector is: -L
v
V
0 (7,-14,14)
O (12,12,-21)
O (24,3,-12)
0(-9, 18, -6)
(18,9, -6)

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