What is || < -2 , 3 , 6 > || ?

1 Answer
ali ergin
Mar 19, 2016

|| <-2,3,6> ||=7

Explanation:

|| <-2,3,6> ||=?
|| < a ,b ,c > ||=sqrt(a^2+b^2+c^2)
|| <-2,3,6> ||=sqrt((-2)^2+3^2+6^2)
|| <-2,3,6> ||=sqrt(4+9+36)
|| <-2,3,6> ||=sqrt49
|| <-2,3,6> ||=7

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