Thank you very much ThePerfectHacker. Oops, I accidentally deleted my post, was trying to edit my proof. Anyway, many thanks to you, ThePerfectHacker
Last edited by jackie; November 15th 2008 at 05:37 PM.
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Originally Posted by jackie I'm not sure about my proof because it seems that I didn't show both ways because this is an iff statement.
One side of the proof is obvious. If is solvable then and so is solvable.
Thank you ThePerfectHacker. So, what I did was irrelevant and not really related to the proof?
Originally Posted by jackie Thank you ThePerfectHacker. So, what I did was irrelevant and not really related to the proof? You proved if has a solution then .