Printable View

Delete...

Quote: 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?

Quote: 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.