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(13) Find the cosine of the angle between the given vectors. (13a) (3, 1, 1) and (2, –4, 2) (13b) i + j and j + 2k (14) Let v = (2,3/2, –3) and w = (-4, –3, 6). Show that v and w are parallel. (15) Let v = (4, 1, –5) and w = (9, 4, 8). Show that v and w are perpindicular.

(13) Find the cosine of the angle between the given vectors. (13a) (3, 1, 1) and (2, –4, 2) (13b) i + j and j + 2k (14) Let v = (2,3/2, –3) and w = (-4, –3, 6). Show that v and w are parallel. (15) Let v = (4, 1, –5) and w = (9, 4, 8). Show that v and w are perpindicular.

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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(13) Find the cosine of the angle between the given vectors. (13a) (3, 1, 1) and (2, –4, 2) (13b) i + j and j+ 2k (14) Let v = (2,3/2, –3) and w = (-4, –3, 6). Show that v and w are parallel. (15) Let v = (4, 1, –5) and w = (9, 4, 8). Show that v and w are perpindicular.
Transcribed Image Text:(13) Find the cosine of the angle between the given vectors. (13a) (3, 1, 1) and (2, –4, 2) (13b) i + j and j+ 2k (14) Let v = (2,3/2, –3) and w = (-4, –3, 6). Show that v and w are parallel. (15) Let v = (4, 1, –5) and w = (9, 4, 8). Show that v and w are perpindicular.
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