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**tyuighp****Member**- Registered: 2015-12-04
- Posts: 12

Find the minimum possible value of

given that

are nonnegative real numbers

such that

.*Last edited by tyuighp (2017-08-04 01:20:57)*

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Use the AM-GM inequality to deduce that You should be able to use the AM-GM inequality again, together with the fact that , to get a lower bound for your original expression.

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