Question

In: Advanced Math

i. |u| ≥ 0 and |u| = 0 iff u = 0. ii. |au| = |a||u|....

i. |u| ≥ 0 and |u| = 0 iff u = 0.

ii. |au| = |a||u|.

iii. 1 |u| u (or just u/|u|) is a unit vector

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