Question

Given u=[1,2,3] and v=[2,-2,-6] use the DOT PRODUCT to find a unit vector perpendicular to both.

Answer 1

let \[\vec{x}=[a,b,c]\]
so,
\[\vec{x}\cdot\vec{u}=0\\
\vec{x}\cdot\vec{v}=0
\]
will give you two equations.
the third equation is from the fact that it is a unit vector. use the three equations and find a,b,c

Answer 2

so how do I get [a,b,c]? Sorry I wasn't here when my class was learning this so I'm absolutely clueless :(

Answer 3

Hey there! I see that you are new to openstudy.
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Answer 4

Perpenduclar means that their product equals to -1 not zero. Yout friend Maleeha just asked this question.

Answer 5

http://openstudy.com/study#/updates/5144b909e4b0e8e8f6bc44bb

Answer 6

Oh ok thanks! :)