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Last edited by racewithferrari; Nov 19th 2009 at 11:00 AM.
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Originally Posted by racewithferrari The following theorem has the form of an implication. If n is an integer and 3n+2 is even, then n is even. Suppose that then . What does that tell you?
Originally Posted by racewithferrari The following theorem has the form of an implication. If n is an integer and 3n+2 is even, then n is even. Give a direct proof of this theorem without using contradiction. Since is even we may state WLOG that and since it must be true that . The conclusion follows.
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