Consider points A(0, -1, 2) and B(2, 1, -2). What is the length of vector AB? oo √21 √24 √18 0 √3

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.2: Direct Methods For Solving Linear Systems
Problem 51EQ
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Consider points A(0, -1, 2) and B(2, 1, -2). What is the length of vector AB?
oo
√21
√24
√18
0
√3
Transcribed Image Text:Consider points A(0, -1, 2) and B(2, 1, -2). What is the length of vector AB? oo √21 √24 √18 0 √3
Select all statements that are true.
If vectors u and v have length 3 and 2, respectively, then the length of u-v must
be 1.
If vectors u and v have length 1 and 2, respectively, then their dot product can
be -3.
If vectors u and v have length 2 and 3, respectively, then their dot product can
be 5.
If vectors u and v have length 2 and 3, respectively, then the length of 2u+v can
be 8.
If vectors u and v have length 2 and 3, respectively, then the length of u+v can
be 5.
Transcribed Image Text:Select all statements that are true. If vectors u and v have length 3 and 2, respectively, then the length of u-v must be 1. If vectors u and v have length 1 and 2, respectively, then their dot product can be -3. If vectors u and v have length 2 and 3, respectively, then their dot product can be 5. If vectors u and v have length 2 and 3, respectively, then the length of 2u+v can be 8. If vectors u and v have length 2 and 3, respectively, then the length of u+v can be 5.
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