Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2013-10-08 05:54:02

ArunSH
Member
Registered: 2013-10-08
Posts: 2

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

Offline

#2 2013-10-08 06:07:18

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

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 agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#3 2013-10-08 06:12:46

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: Hello everyone!

Hi ArunSH

Welcome to the forum! smile


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

Offline

#4 2013-10-08 06:15:09

ArunSH
Member
Registered: 2013-10-08
Posts: 2

Re: Hello everyone!

?? I said Thanks and that stuff.

Offline

#5 2013-10-08 06:21:27

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

Re: Hello everyone!

Hi;

You are welcome.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

Board footer

Powered by FluxBB