Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

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

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