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Thread: Inequalities hard

  1. January 27th 2013, 11:11 PM #1
    leezangqe
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    Inequalities hard

    Find the maximum and minimum values of the expression P=\frac{a-b}{c} +\frac{b-c}{a} +\frac{c-a}{b}. Where a,b,c are positive real numbers satisfying the condition min\left \{ a,b,c \right \}\geq \frac{1}{4}max\left \{ a,b,c \right \}
    Last edited by leezangqe; January 27th 2013 at 11:14 PM.
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  2. January 28th 2013, 05:43 PM #2
    chiro
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    Re: Inequalities hard

    Hey leezangqe.

    What class is this in? Is this in multi-variable calculus or in an optimization course? Have you learned Lagrange Multipliers?
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  3. January 29th 2013, 05:36 AM #3
    leezangqe
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    Re: Inequalities hard

    can you explain more clearly?
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  4. January 29th 2013, 02:10 PM #4
    chiro
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    Re: Inequalities hard

    Are you covering stuff like this?

    Lagrange multiplier - Wikipedia, the free encyclopedia
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  5. January 29th 2013, 08:06 PM #5
    leezangqe
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    Re: Inequalities hard

    Thank you, but I need a solution specific setups primary math!
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