Question

What is the norm of `< 5 , 7 , -2 >`?

Answer 1

`|| A ||=sqrt78`

Explanation:

`vec A=5 hat i+7 hat j-2 hat k`
`|| A ||=sqrt(5^2+7^2+(-2)^2)`
`|| A ||=sqrt(25+49+4)`
`|| A ||=sqrt78`