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Optimisation Lagrangian Problem

  1. May 22, 2013 #1
    No this is not homework.


    Ok i am struggling to even start this question.

    I see it has a constraint so i would be tempted to use Lagrangian but from there i don't see how px and qy fit into it?

    Some assistance on the tools needed to approach this question would be great, it may be two-variable optimisation but i don't really have a handle on that either.


  2. jcsd
  3. May 25, 2013 #2


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    It looks like Lagrange multiplier theory would come in handy. Look at the intro to this Wikipedia page...

    That is exactly your problem (for suitable f, g and c).

    Note that px is just one of the given constants p multiplied by the variable x, I'm not sure why that confuses you.
  4. May 25, 2013 #3
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