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    soyuz02's Avatar
    soyuz02 Posts: 8, Reputation: 1
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    #1

    Mar 29, 2007, 07:15 AM
    Partial Derivatives
    Hi,

    I need to take the partial derivatives with respect to x,y,z and λ.

    Normally I would have no problem going about this however the problem for me is that there aren't single unkowns but only combined ones:

    L= 5xz + 4xy + 4yz + xyzλ - 12λ

    Couldn't anyone please help me here? Thank you.

    P.S. This is part of a lagrange multiplier problem which I am working through.
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Mar 29, 2007, 12:35 PM
    See the Lagrange post.
    soyuz02's Avatar
    soyuz02 Posts: 8, Reputation: 1
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    #3

    Apr 1, 2007, 05:45 AM
    Thanks a lot!
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