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Math Help - for intelligent students!

  1. #1
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    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.

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  2. #2
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    Quote Originally Posted by dmc0929 View Post
    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.

    Is there a point to posting this?
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  3. #3
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    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 ???
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  4. #4
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    Quote Originally Posted by simplependulum View Post
    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?
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