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- bobbym
- 2012-09-25 02:35:30
Hi;
Have you left out some constraint on this problem?
- anonimnystefy
- 2012-09-24 22:52:05
Hi hammana
Have you heard of the AM-GM inequality?
- hammana
- 2012-09-24 19:59:31
If a, b, c, d are 4 positive numbers, show that
a/b+b/c+c/d+d/a>=4