Negative times negative equals positve, so -a*-b=ab (positive ab)
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If a is to b as c is to d, a x d = b x c. The product of the means (b & c) equals the product of the extremes (a & d).
2xa/b
Scalar product = (magnitude of 'A') times (magnitude of 'B') times (cosine of the angle between 'A' and 'B')
It is the cross product of two vectors. The cross product of two vectors is always a pseudo-vector. This is related to the fact that A x B is not the same as B x A: in the case of the cross product, A x B = - (B x A).
w(a/b)