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Algebra & Trigonometry with Analytic Geometry

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter8: Applications Of Trigonometry

Section8.4: The Dot Product

Problem 19E

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Question 10
Given x=(1,-2,-1,a) and y=(3,3,-2,1) are two 1x4 row vectors, where "a" is some constant, which of the following statements is false?
O x and y are orthogonal if a=1.
O x. 2y=a – 1
Ilx|l=V6+a?
О у 2х 3 (1,7,0,-2а)

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