alleryVector addition is:
ANon-commutative
BCommutative (a+b = b+a)
CAlways zero
DSometimes commutative
Answer & Solution
Correct answer: B. Commutative (a+b = b+a)
**Vector addition is commutative:** ā + b̄ = b̄ + ā.
(Also associative: (ā+b̄)+c̄ = ā+(b̄+c̄). But cross product is non-commutative.)
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