Medisis

Vector norm

Please read section on vectors before reading this.

Recall that a vector can be expressed as (5,2,3,6). If you want one real number that expresses this vector, you want the norm. That would be the mathematical name of the magnitude of the vector and can be calculated as follows the square root of (5^2 + 2^2 + 3^2 +6^2) where ^2 means to the power of 2.