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#1 2013-10-09 04:54:02

ArunSH
Novice

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Hello everyone!

Hey everyone! My friend shivam got me on this forum. is this the place for intros? Well, i am in high school (12th grade) and I need a lot of help so ill be on here often! Nice to meet you all. And can anyone help me with this?

(1/3≤xy+yz+zx≤ 3) find the range of values for xyz and range of values for x+y+z

#2 2013-10-09 05:07:18

bobbym

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Re: Hello everyone!

Hi ArunSH;

Welcome to the forum.

That is a BMO question. The solution is given here with the method. Please take a look at it.

http://www.computing-wisdom.com/problem … 93-1-5.pdf

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#3 2013-10-09 05:12:46

anonimnystefy
Real Member

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Re: Hello everyone!

Hi ArunSH

Welcome to the forum!

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#4 2013-10-09 05:15:09

ArunSH
Novice

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Re: Hello everyone!

?? I said Thanks and that stuff.

#5 2013-10-09 05:21:27

bobbym

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Re: Hello everyone!

Hi;

You are welcome.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.