Error for the dot product

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Game Programming in C++ Code

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Closed imagire closed 5 years ago

imagire commented 5 years ago

Chapter 3 Page 70: The dot product does not fulfill the associative law, a.(b.c) != (a.b).c.

chalonverse commented 5 years ago

Good catch, I think I meant to say that scalar multiplication is associative over the dot product, but then the equation was also incorrect.

The following property is true: s (a dot b) = (s a) dot b = a dot (s b)