Question

What is the norm of `< 7 , -2, -1 >`?

Answer 1

`||A||=3sqrt 6" unit"`

Explanation:

`A= <7,-2,-1>`

`||A||=sqrt(7^2+(-2)^2+(-1)^2)`

`|A||=sqrt(49+4+1)`

`||A||=sqrt54`

`||A||=sqrt(9*6)`

`||A||=3sqrt 6" unit"`