向量归一化怎么算?要说的清楚点,因为我是外行

归一化 即 magnitude = 1
let a is a nth dimension vector
(a1,a2,.,an)
then the magnitude of a ( |a|)
=√(a1²+a2²+.+an²)
a 归一化 = a/|a|
= a/√(a1²+a2²+.+an²)
for example if a = (1,2)
a 归一化 = (1,2)/√5