Example Video Example Find the scalar projection and vector projection of b = (4, 1, 1) onto a = (-1, 3, 4). Solution Since |al = V(-1)² + 32 + 42 = V26, the scalar projection of b onto a is a· b (-1)(4) + 3(1) + 4(1) comp,b |a| 26 The vector projection is this scalar projection times the unit vector in the direction of a, below. proj,b = |a|
Example Video Example Find the scalar projection and vector projection of b = (4, 1, 1) onto a = (-1, 3, 4). Solution Since |al = V(-1)² + 32 + 42 = V26, the scalar projection of b onto a is a· b (-1)(4) + 3(1) + 4(1) comp,b |a| 26 The vector projection is this scalar projection times the unit vector in the direction of a, below. proj,b = |a|
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.3: Lines
Problem 23E
Related questions
Question
I was not able to finish this homework problem. Please help me solve it! Thank you.
![Example
Video Example
Find the scalar projection and vector projection of b = (4, 1, 1) onto a = (-1, 3, 4).
Solution
Since Jal = V(-1)2 + 32 + 42 = V26, the scalar projection of b onto a is
%3D
a · b
(-1)(4) + 3(1) + 4(1)
compab
|al
V 26
The vector projection is this scalar projection times the unit vector in the direction of a, below.
a
projąb =
|a|](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2d7d2d74-d827-467b-8d8e-9fee9720e388%2F232436ee-91a7-4909-a8ae-7e23e5ef86b9%2F6f0ddbl_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Example
Video Example
Find the scalar projection and vector projection of b = (4, 1, 1) onto a = (-1, 3, 4).
Solution
Since Jal = V(-1)2 + 32 + 42 = V26, the scalar projection of b onto a is
%3D
a · b
(-1)(4) + 3(1) + 4(1)
compab
|al
V 26
The vector projection is this scalar projection times the unit vector in the direction of a, below.
a
projąb =
|a|
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