Please help me to solve this problem. I've worked on it about a week or two. But it's very hard for me:ifandprove that

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- Apr 4th 2010, 07:40 AMhavalizaA hard problem for me
Please help me to solve this problem. I've worked on it about a week or two. But it's very hard for me:

**if****and****prove that** - Apr 4th 2010, 12:18 PMchisigma
If then is , so that if is and then ...

Kind regards

- Apr 4th 2010, 12:25 PMtonio
- Apr 5th 2010, 09:46 AMhavaliza
- Apr 5th 2010, 10:49 AMchiph588@
- Apr 7th 2010, 09:46 PMsimplependulum
another method :

If , let

since ,

but we have

, a contradiction