Is the one encircled on the solution really simplified or just 2/sqrt(38)?

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Is the one encircled on the solution really simplified or just 2/sqrt(38)?
1. Given the following vectors: u=(1, 2,-4) and
v=(2, 3, 5)
Cind:
Transcribed Image Text:1. Given the following vectors: u=(1, 2,-4) and v=(2, 3, 5) Cind:
е).
u=
| u|
<1,2,–4>
V21
2
4
21
/21
21
û=-
| v|
<2,3,5>
V38
2
3
19
V38
/38
Transcribed Image Text:е). u= | u| <1,2,–4> V21 2 4 21 /21 21 û=- | v| <2,3,5> V38 2 3 19 V38 /38
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