Just a little queations really
Now i can prove that is irrational, can i just say that is irrational with no extra proof?
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I'd be convinced, but it is perhaps even more obvious if you do things the other way around. If were rational then you would have = so that then would be rational as well.
Suppose that is rational.
Then , contradiction. Therefore, the supposition is false and is irational.
Originally Posted by red_dog Suppose that is rational.
Then , contradiction. Therefore, the supposition is false and is irational. i don't really understand this, can you add a few more words explaining please
edit-ignore this question, i just reread it a few times and it makes complete sense now thanks!
Last edited by Rapid_W; Aug 12th 2009 at 02:01 PM.
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