Question

What is `|| < -2 , -7 , 1 > ||`?

Answer 1

`|| < -2, -7, 1 > || = 3sqrt(6)`

Explanation:

The general formula for the Euclidean norm of a `3` dimensional vector is given by the formula:

`|| < u, v, w > || = sqrt(u^2+v^2+w^2)`

So in our example:

`|| < -2, -7, 1 > || = sqrt((-2)^2+(-7)^2+1^2) = sqrt(4+49+1) = sqrt(54) = 3sqrt(6)`