Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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#1 2008-03-30 17:31:28
- Identity
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- Registered: 2007-04-18
- Posts: 934
Inequality! Yay!
Prove that for all reals
, .I've tried at this one for ages, but it's probably beyond me... anyway, give it a shot!
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#2 2008-03-30 21:42:10
- JaneFairfax
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- Registered: 2007-02-23
- Posts: 6,868
Re: Inequality! Yay!
By the CauchySchwarz inequality
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#3 2008-03-30 22:52:58
- Identity
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- Registered: 2007-04-18
- Posts: 934
Re: Inequality! Yay!
Thanks Jane, I was trying to use the am-hm inequality because
and it looks so nice
. I also tried Cauchy but briefly.
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