plzzz answer it its something to do with vector, but i dont know it.
2007-09-23 07:26:10 · 3 answers · asked by nice_ girl 1 in Science & Mathematics ➔ Mathematics
What do you mean there's no associativity property? If v is a vector, and a and b are scalars, then:
a*(b*v) = (a*b)*v, which is associativity.
Who told you that this isn't true?
2007-09-23 07:35:35 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Alex, I don't think that addresses her question. Here's what I think she meant: If u, v. w are vectors and * represents the scalar product, is it true that u*(v*w) = (u*v)*w?
Obviously not true because the operations are not even defined--e.g., on the left side, v*w is a scalar and u (scalar product) (scalar) is nonsense.
2007-09-23 07:43:31 · answer #2 · answered by Tony 7 · 0⤊ 0⤋
I agree. In a vector space, associativity holds in scalar multiplication.
Did your teacher say that?
2007-09-23 07:40:01 · answer #3 · answered by Anonymous · 0⤊ 0⤋