# for intelligent students!

• Jul 7th 2009, 01:49 AM
dmc0929
for intelligent students!
This is university entrance exam in Vietnam.
A sector: economy, finance, bank, technology, science... university.
B sector: pharmacy, medicine university.
D sector: economy, foreign languages, society university.

http://i790.photobucket.com/albums/y...ftWord-x-1.jpg
• Jul 7th 2009, 01:51 AM
Prove It
Quote:

Originally Posted by dmc0929
This is university entrance exam in Vietnam.
A sector: economy, finance, bank, technology, science... university.
B sector: pharmacy, medicine university.
D sector: economy, foreign languages, society university.

http://i790.photobucket.com/albums/y...ftWord-x-1.jpg

Is there a point to posting this?
• Jul 7th 2009, 02:27 AM
simplependulum
May i ask a question ?

If the function of variables $x,y,z$ is convertable , ie $f(x,y,z) = f(x,z,y) = f(y,x,z) = f(y,z,x) =f(z,x,y) = f(z,y,x)$ , is there a theorem which states that $f(x,y,z)$ is min. or max when $x = y= z$ ???
• Jul 7th 2009, 03:06 AM
alexmahone
Quote:

Originally Posted by simplependulum
May i ask a question ?

If the function of variables $x,y,z$ is convertable , ie $f(x,y,z) = f(x,z,y) = f(y,x,z) = f(y,z,x) =f(z,x,y) = f(z,y,x)$ , is there a theorem which states that $f(x,y,z)$ is min. or max when $x = y= z$ ???

Jensen's inequality?