Sunday, March 17, 2013

week 9

This week we have the second term test which is about the proof and the structure of a prove. I think I did good on it but I have some thoughts about it.
 First, what kinds of comments are really necessary for the proof.
 Second, when you stuck at some proof you should try the negation and the    contrapositive of the statement.
 Third, is there a way to check whether the proof is right or not?

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