Question

What is the euclidean norm?

Answer 1

In `RR`, `RR^2` and `RR^3` The euclidean norm is quite simply the distance between coordinates

This is further extended for some vector `vecx = (x_1, x_2, ..., x_n) in RR^n` by:

`|| vec x || = sqrt(x_1^2+ x_2^2 +...+ x_n^2)`