Let   u=4i−j​, v=4i+j​, w=i+5j

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.3: Vectors
Problem 13E
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Let
 
u=4i−j​,
v=4i+j​,
w=i+5j
 
Find the specified scalar.
 
u•​(v+w​)
 
 
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