What is || <-7, -7, -3 > - < 4 , 4, -1 > ||||<−7,−7,−3>−<4,4,−1>||?

1 Answer
ali ergin
Feb 14, 2016

|| <-11,-11,-2> || =sqrt 245||<−11,−11,−2>||=√245

Explanation:

<-7,-7,-3> - <4,4,-1> = <-7-4,-7-4,-3-(-1)><−7,−7,−3>−<4,4,−1>=<−7−4,−7−4,−3−(−1)>
<-7,-7,-3> - <4,4,-1> = <-11,-11,-2><−7,−7,−3>−<4,4,−1>=<−11,−11,−2>
|| <-11,-11,-2> || =sqrt((-11)^2+(-11)^2+(-2)^2)||<−11,−11,−2>||=√(−11)2+(−11)2+(−2)2
|| <-11,-11,-2> || =sqrt(121+121+4)||<−11,−11,−2>||=√121+121+4
|| <-11,-11,-2> || =sqrt 245||<−11,−11,−2>||=√245

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