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- scientia
- 2012-10-15 22:55:57
I have a very weird solution; you probably won't like it but I'll have a go anyway.
Let .
Then because .
Let .
We find (just). It follows that since the quadratic function is strictly increasing for positive x.
The LHS is and so we are done.
- engrymbiff
- 2012-10-15 04:15:30
Hm... I really cannot solve it, I have a vague memory of how I solved it last time but now I don't have a good clue of how...
- bobbym
- 2012-10-14 01:29:10
Hi anonimnystefy;
I missed that. I am sorry about that. Bob and I had a good discussion on that and it seems better to work backwards in that case. Even though they do work forwards a lot in inequality books.
Unfortunately, whatever brilliant idea I had about this problem 1 year ago, I can not remember it at all.
- anonimnystefy
- 2012-10-14 01:22:40
Hi bobbym
I think what Agnishom wanted to ask you is whether it is okay to start the proof with what we want to prove and work our way to a true statement...
- bobbym
- 2012-10-13 22:48:13
Hi;
This is the problem:
- Agnishom
- 2012-10-13 22:40:04
Hi Bobbym,
Is it okay to start with the thing we are trying to prove?
- engrymbiff
- 2012-10-13 22:28:25
Sorry, that didn't help me..
- bobbym
- 2011-08-20 20:20:36
Hi;
- engrymbiff
- 2011-08-20 19:36:44
How to do this?