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Math Help - Lagrange Multiplier question - Can't solve for C and B

  1. #1
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    Lagrange Multiplier question - Can't solve for C and B

    OK I need help with this question. Basically I am not confident I am headed in the right direction as I've no previous experience with Lagrange. Can someone solve this question for me and confirm whether or not I am heading in the right direction with the answer?

    The Question;


    My Answer;

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  2. #2
    MHF Contributor Calculus26's Avatar
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    since B^(-1/2) = C^(-1/2)

    B = C

    Use this in 2B+C = 30 to obtain

    B= 10 and C =10
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