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

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#1 2012-10-15 22:23:52

Fistfiz
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sup(A+B)<?=supA + supB

Hi guys,
I have a doubt about a question on my book:
it says:
"let

, and


show that

"

...my question is: can you provide an example where

?

thank you

Last edited by Fistfiz (2012-10-15 22:24:31)


30+2=28 (Mom's identity)

#2 2012-10-16 05:54:23

Fistfiz
Member

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Re: sup(A+B)<?=supA + supB

solved, correct proposition is:

Last edited by Fistfiz (2012-10-16 05:55:25)


30+2=28 (Mom's identity)

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