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$Old$ 11-16-2008, 01:22 PM

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$Default$ Vector Proof

Prove that a + (b +c) = (a + b) + c

Had a go but not too sure, I proved it for a+b = b+a but this one has me confused.
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$Old$ 11-19-2008, 09:33 AM

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Just a quick question, is there a specific vector space that you have to prove this for? Otherwise, associativity is kind of an axiom...

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