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Linear Algebra
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Dot product
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107.
Commutativity of Dot Product
easy
The dot product is commutative. What does this mean?
A
a·b equals -b·a — swapping the vectors reverses the sign of the dot product
B
a·b equals b·a — the order of the two vectors does not affect the result
C
a·b equals ||a·b|| — the dot product always equals its own absolute value
D
a·b equals a×b — the dot product is equivalent to the cross product in any dimension
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