If A = 3i + 4j and B = 7i + 24j, the %3D vector having the same magnitude as B and parallel to A is * 15i + 20j 15i + 10j 5i + 20j O 20i + 15j The vector that must be added to the vector i -3j + 2k and 3i + 6j - 7k so that the resultant vector is a unit vector along the y-axis is * O null vector 3 i+ 4j + 5k 4i + 2j + 5k O -4i - 2j + 5k

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter1: Vectors
Section1.1: The Geometry And Algebra Of Vectors
Problem 4EQ
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Please answer 5 and 6
If A = 3i + 4j and B = 7i + 24j, the
%3D
vector having the same magnitude
as B and parallel to A is *
15i + 20j
15i + 10j
5i + 20j
20i + 15j
The vector that must be added to
the vector i -3j + 2k and 3i + 6j - 7k so
that the resultant vector is a unit
vector along the y-axis is *
null vector
3 i+ 4j + 5k
4i + 2j + 5k
O -4i - 2j + 5k
Transcribed Image Text:If A = 3i + 4j and B = 7i + 24j, the %3D vector having the same magnitude as B and parallel to A is * 15i + 20j 15i + 10j 5i + 20j 20i + 15j The vector that must be added to the vector i -3j + 2k and 3i + 6j - 7k so that the resultant vector is a unit vector along the y-axis is * null vector 3 i+ 4j + 5k 4i + 2j + 5k O -4i - 2j + 5k
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